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Duke is a male title either of a monarch ruling over a
duchy A duchy, also called a dukedom, is a country, territory, fiefdom, fief, or domain ruled by a duke or duchess, a ruler hierarchically second to the king or Queen regnant, queen in Western European tradition. There once existed an important differe ...
, or of a member of royalty, or
nobility Nobility is a social class found in many societies that have an aristocracy. It is normally appointed by and ranked immediately below royalty. Nobility has often been an estate of the realm with many exclusive functions and characteristics. T ...
. As rulers, dukes are ranked below emperors, kings, grand princes,
grand duke Grand duke (feminine: grand duchess) is a European hereditary title, used either by certain monarchs or by members of certain monarchs' families. The title is used in some current and former independent monarchies in Europe, particularly: * in ...
s, and above sovereign princes. As royalty or nobility, they are ranked below grand dukes and above or below princes, depending on the country or specific title. The title comes from French ''duc'', itself from the
Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
'' dux'', 'leader', a term used in republican Rome to refer to a military commander without an official rank (particularly one of Germanic or Celtic origin), and later coming to mean the leading military commander of a province. In most countries, the word ''duchess'' is the female equivalent. Following the reforms of the emperor
Diocletian Diocletian ( ; ; ; 242/245 – 311/312), nicknamed Jovius, was Roman emperor from 284 until his abdication in 305. He was born Diocles to a family of low status in the Roman province of Dalmatia (Roman province), Dalmatia. As with other Illyri ...
(which separated the civilian and military administrations of the Roman provinces), a ''dux'' became the military commander in each province. The title ''dux'', Hellenised to ''doux'', survived in the Eastern Roman Empire where it continued in several contexts, signifying a rank equivalent to a captain or general. Later on, in the 11th century, the title '' Megas Doux'' was introduced for the post of commander-in-chief of the entire navy. During the
Middle Ages In the history of Europe, the Middle Ages or medieval period lasted approximately from the 5th to the late 15th centuries, similarly to the post-classical period of global history. It began with the fall of the Western Roman Empire and ...
, the title (as '' Herzog'') signified first among the Germanic monarchies. Dukes were the rulers of the provinces and the superiors of the
count Count (feminine: countess) is a historical title of nobility in certain European countries, varying in relative status, generally of middling rank in the hierarchy of nobility. Pine, L. G. ''Titles: How the King Became His Majesty''. New York: ...
s in the cities and later, in the
feudal monarchies Feudalism, also known as the feudal system, was a combination of legal, economic, military, cultural, and political customs that flourished in medieval Europe from the 9th to 15th centuries. Broadly defined, it was a way of structuring socie ...
, the highest-ranking peers of the king. A duke may or may not be, '' ipso facto'', a member of the nation's
peerage A peerage is a legal system historically comprising various hereditary titles (and sometimes Life peer, non-hereditary titles) in a number of countries, and composed of assorted Imperial, royal and noble ranks, noble ranks. Peerages include: A ...
: in the United Kingdom and Spain, all dukes are/were also peers of the realm, in France, some were and some were not, while the term is not applicable to dukedoms of other nations, even where an institution similar to the peerage (e.g.
Grandee Grandee (; , ) is an official royal and noble ranks, aristocratic title conferred on some Spanish nobility. Holders of this dignity enjoyed similar privileges to those of the peerage of France during the , though in neither country did they ha ...
ship, Imperial Diet, Hungarian House of Magnates) existed. During the 19th century, many of the smaller German and Italian states were ruled by dukes or grand dukes. But at present, with the exception of the
Grand Duchy of Luxembourg Luxembourg, officially the Grand Duchy of Luxembourg, is a landlocked country in Western Europe. It is bordered by Belgium to the west and north, Germany to the east, and France on the south. Its capital and most populous city, Luxembourg ...
, there are no dukes ruling as monarchs. Duke remains the highest hereditary title (aside from titles borne by a reigning or formerly reigning dynasty) in Portugal (though now a republic), Spain, and the United Kingdom. In Sweden, members of the royal family are given a personal dukedom at birth. The Pope, as a temporal sovereign, has also, though rarely, granted the title of duke or duchess to persons for services to the
Holy See The Holy See (, ; ), also called the See of Rome, the Petrine See or the Apostolic See, is the central governing body of the Catholic Church and Vatican City. It encompasses the office of the pope as the Bishops in the Catholic Church, bishop ...
. In some realms the relative status of "duke" and "prince", as titles borne by the
nobility Nobility is a social class found in many societies that have an aristocracy. It is normally appointed by and ranked immediately below royalty. Nobility has often been an estate of the realm with many exclusive functions and characteristics. T ...
rather than by members of reigning dynasties, varied—e.g., in Italy and Germany. A woman who holds in her own right the title to such duchy or dukedom, or is married to a duke, is normally styled duchess.
Queen Elizabeth II Elizabeth II (Elizabeth Alexandra Mary; 21 April 19268 September 2022) was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until Death and state funeral of Elizabeth II, her death in 2022. ...
, however, was known by tradition as
Duke of Normandy In the Middle Ages, the duke of Normandy was the ruler of the Duchy of Normandy in north-western France. The duchy arose out of a grant of land to the Viking leader Rollo by the French king Charles the Simple in 911. In 924 and again in 933, N ...
in the
Channel Islands The Channel Islands are an archipelago in the English Channel, off the French coast of Normandy. They are divided into two Crown Dependencies: the Jersey, Bailiwick of Jersey, which is the largest of the islands; and the Bailiwick of Guernsey, ...
and
Duke of Lancaster The dukedom of Lancaster is a former Peerage of England, English peerage, created three times in the Middle Ages, which finally merged in the Crown when Henry V of England, Henry V succeeded to the throne in 1413. Despite the extinction of the ...
in Lancashire.


Duchy and dukedom

A duchy is the territory or geopolitical entity ruled by a duke, whereas his title or area is often called a dukedom. The
Grand Duchy of Luxembourg Luxembourg, officially the Grand Duchy of Luxembourg, is a landlocked country in Western Europe. It is bordered by Belgium to the west and north, Germany to the east, and France on the south. Its capital and most populous city, Luxembourg ...
is a fully independent state and its head, the Grand Duke, is a sovereign monarch reigning over his Luxembourgish subjects. The
Duke of Cornwall Duke of Cornwall () is a title in the Peerage of England, traditionally held by the eldest son of the reigning Monarchy of the United Kingdom, British monarch, previously the English monarch. The Duchy of Cornwall was the first duchy created i ...
holds both the dukedom (title) and duchy (estate holdings), the latter being the source of his personal income; those living on the ducal estates are subjects of the British sovereign and owe neither fealty nor services to the duke ''per se''. In Scotland, the male heir apparent to the British crown is always the Duke of Rothesay as well, but this is a dukedom (title) without a duchy. Similarly, the British monarch rules and owns the Duchy of Lancaster as
Duke of Lancaster The dukedom of Lancaster is a former Peerage of England, English peerage, created three times in the Middle Ages, which finally merged in the Crown when Henry V of England, Henry V succeeded to the throne in 1413. Despite the extinction of the ...
, but it is held separately from the Crown, with the income of the duchy estates providing the sovereign's Privy Purse. The Channel Islands are two of the three remaining
Crown Dependencies The Crown Dependencies are three dependent territory, offshore island territories in the British Islands that are self-governing possessions of the The Crown, British Crown: the Bailiwick of Guernsey and the Jersey, Bailiwick of Jersey, both lo ...
, the last vestiges of the lands of the Duchy of Normandy. The Islanders in their loyal toast will say "Le Roi, notre Duc" (The King, Our Duke). Though the title was apparently renounced under the Treaty of Paris in 1259, the Crown still maintains that the title is retained: "In 1106, William's youngest son Henry I seized the Duchy of Normandy from his brother Robert; since that time, the English sovereign has always held the title
Duke of Normandy In the Middle Ages, the duke of Normandy was the ruler of the Duchy of Normandy in north-western France. The duchy arose out of a grant of land to the Viking leader Rollo by the French king Charles the Simple in 911. In 924 and again in 933, N ...
", and that "By 1205, England had lost most of its French lands, including Normandy. However, the Channel Islands, part of the lost Duchy, remained a self-governing possession of the English Crown. While the islands today retain autonomy in government, they owe allegiance to The King in his role as Duke of Normandy."


Middle Ages

During the
Middle Ages In the history of Europe, the Middle Ages or medieval period lasted approximately from the 5th to the late 15th centuries, similarly to the post-classical period of global history. It began with the fall of the Western Roman Empire and ...
, after Roman power in Western Europe collapsed, the title was still employed in the Germanic kingdoms, usually to refer to the rulers of old Roman provinces.


Albania

The Venetians installed a "Duke of Durazzo" (today Durrës) during their brief rule over the city and its environs in 1205–1213. In 1332,
Robert of Taranto Robert II of Taranto (1319 or early winter 1326 – 10 September 1364), of the Capetian House of Anjou, Angevin family, Principality of Taranto, Prince of Taranto (1331–1346), Kingdom of Albania (medieval), King of Albania (1331–1332), ...
succeeded his father,
Philip Philip, also Phillip, is a male name derived from the Macedonian Old Koine language, Greek (''Philippos'', lit. "horse-loving" or "fond of horses"), from a compound of (''philos'', "dear", "loved", "loving") and (''hippos'', "horse"). Prominen ...
. Robert's uncle, John, did not wish to do him homage for the
Principality of Achaea The Principality of Achaea () or Principality of Morea was one of the vassal states of the Latin Empire, which replaced the Byzantine Empire after the capture of Constantinople during the Fourth Crusade. It became a vassal of the Kingdom of Thes ...
, so Robert received Achaea from John in exchange for 5,000 ounces of gold and the rights to the diminished Kingdom of Albania. John took the style of Duke of Durazzo. In 1368, Durazzo fell to Karl Thopia, who was recognized by
Venice Venice ( ; ; , formerly ) is a city in northeastern Italy and the capital of the Veneto Regions of Italy, region. It is built on a group of 118 islands that are separated by expanses of open water and by canals; portions of the city are li ...
as ''Prince of Albania''.


Visigoths

The
Visigoths The Visigoths (; ) were a Germanic people united under the rule of a king and living within the Roman Empire during late antiquity. The Visigoths first appeared in the Balkans, as a Roman-allied Barbarian kingdoms, barbarian military group unite ...
retained the Roman divisions of their kingdom in the
Iberian Peninsula The Iberian Peninsula ( ), also known as Iberia, is a peninsula in south-western Europe. Mostly separated from the rest of the European landmass by the Pyrenees, it includes the territories of peninsular Spain and Continental Portugal, comprisin ...
and it seems that dukes ruled over these areas. They were the most powerful landowners and, along with the bishops, elected the king, usually from their own midst. They were the military commanders and in this capacity often acted independently from the king, most notably in the latter period before the Muslim invasions. The army was structured decimally with the highest unit, the thiufa, probably corresponding to about 1,000 people from each ''civitas'' (city district). The cities were commanded by counts, who were in turn answerable to the dukes, who called up the ''thiufae'' when necessary.


Lombards

When the
Lombards The Lombards () or Longobards () were a Germanic peoples, Germanic people who conquered most of the Italian Peninsula between 568 and 774. The medieval Lombard historian Paul the Deacon wrote in the ''History of the Lombards'' (written betwee ...
entered Italy, the Latin chroniclers called their war leaders ''duces'' in the old fashion. These leaders eventually became the provincial rulers, each with a recognized seat of government. Though nominally loyal to the king, the concept of kingship was new to the Lombards and the dukes were highly independent, especially in central and southern Italy, where the Duke of Spoleto and the Duke of Benevento were ''de facto'' sovereigns. In 575, when Cleph died, a period known as the Rule of the Dukes, in which the dukes governed without a king, commenced. It lasted only a decade before the disunited magnates, to defend the kingdom from external attacks, elected a new king and even diminished their own duchies to provide him with a handsome royal
demesne A demesne ( ) or domain was all the land retained and managed by a lord of the manor under the feudal system for his own use, occupation, or support. This distinguished it from land subinfeudation, sub-enfeoffed by him to others as sub-tenants. ...
. The Lombard kings were usually drawn from the duke pool when the title was not hereditary. The dukes tried to make their own offices hereditary. Beneath them in the internal structure were the counts and gastalds, a uniquely Lombard title initially referring to judicial functions, similar to a count's, in provincial regions.


Franks

The Franks employed dukes as the governors of Roman provinces, though they also led military expeditions far from their duchies. The dukes were the highest-ranking officials in the realm, typically Frankish (whereas the counts were often Gallo-Roman), and formed the class from which the kings' generals were chosen in times of war. The dukes met with the king every May to discuss policy for the upcoming year, the so-called Mayfield. In Burgundy and
Provence Provence is a geographical region and historical province of southeastern France, which stretches from the left bank of the lower Rhône to the west to the France–Italy border, Italian border to the east; it is bordered by the Mediterrane ...
, the titles of patrician and
prefect Prefect (from the Latin ''praefectus'', substantive adjectival form of ''praeficere'': "put in front", meaning in charge) is a magisterial title of varying definition, but essentially refers to the leader of an administrative area. A prefect' ...
were commonly employed instead of duke, probably for historical reasons relating to the greater Romanization of those provinces. But the titles were basically equivalent. In late
Merovingian The Merovingian dynasty () was the ruling family of the Franks from around the middle of the 5th century until Pepin the Short in 751. They first appear as "Kings of the Franks" in the Roman army of northern Gaul. By 509 they had united all the ...
Gaul, the mayors of the palace of the Arnulfing clan began to use the title ''dux et princeps Francorum'': 'duke and prince of the Franks'. In this title, ''duke'' implied supreme military control of the entire nation (''Francorum'', the Franks) and it was thus used until the end of the Carolingian dynasty in France in 987.


Holy Roman Empire


Stem duchies

The stem duchies were the constituent duchies of the kingdom of Germany at the time of the extinction of the Carolingian dynasty (the death of Louis the Child in 911) and the transitional period leading to the formation of the Holy Roman Empire later in the 10th century.


England


Anglo-Saxon times

In Anglo-Saxon England, where the Roman political divisions were largely abandoned, the highest political rank beneath that of king was
ealdorman Ealdorman ( , )"ealdorman"
''Collins English Dictionary''. was an office in the Government ...
, and the first ealdormen were referred to as ''duces'' (the plural of the original Latin ''dux'') in the chronicles. The title ealdorman was replaced by the Danish ''eorl'' (later
earl Earl () is a rank of the nobility in the United Kingdom. In modern Britain, an earl is a member of the Peerages in the United Kingdom, peerage, ranking below a marquess and above a viscount. A feminine form of ''earl'' never developed; instead, ...
) over time. After the
Norman conquest The Norman Conquest (or the Conquest) was the 11th-century invasion and occupation of England by an army made up of thousands of Normans, Norman, French people, French, Flemish people, Flemish, and Bretons, Breton troops, all led by the Du ...
, their power and regional jurisdiction was limited to that of the Norman
count Count (feminine: countess) is a historical title of nobility in certain European countries, varying in relative status, generally of middling rank in the hierarchy of nobility. Pine, L. G. ''Titles: How the King Became His Majesty''. New York: ...
s.


Late medieval times

Edward III of England Edward III (13 November 1312 – 21 June 1377), also known as Edward of Windsor before his accession, was King of England from January 1327 until his death in 1377. He is noted for his military success and for restoring royal authority after t ...
created the first English dukedom by naming his eldest son Edward, the Black Prince, as
Duke of Cornwall Duke of Cornwall () is a title in the Peerage of England, traditionally held by the eldest son of the reigning Monarchy of the United Kingdom, British monarch, previously the English monarch. The Duchy of Cornwall was the first duchy created i ...
in 1337. Upon the death of the Black Prince, the duchy of Cornwall passed to his nine-year-old son, who would eventually succeed his grandfather as Richard II. The title of
Duke of Lancaster The dukedom of Lancaster is a former Peerage of England, English peerage, created three times in the Middle Ages, which finally merged in the Crown when Henry V of England, Henry V succeeded to the throne in 1413. Despite the extinction of the ...
was created by Edward III in 1351 for Henry of Grosmont, but became extinct upon the duke's death in 1361. The following year, Edward III bestowed the title (2nd creation) on his fourth son, John of Gaunt, who was also married to the first duke's daughter. On the same day Edward III also created his second son, Lionel of Antwerp, as Duke of Clarence. All five of Edward III's surviving sons eventually became dukes. In 1385, ten years after their father's death, his heir Richard II created dukedoms for his last two uncles on the same day. Thomas of Woodstock was named Duke of Gloucester and Edmund of Langley became Duke of York, thereby founding the House of York, which later fought for the throne with John of Gaunt's Lancastrian descendants during the
Wars of the Roses The Wars of the Roses, known at the time and in following centuries as the Civil Wars, were a series of armed confrontations, machinations, battles and campaigns fought over control of the English throne from 1455 to 1487. The conflict was fo ...
. By 1483, a total of 16 ducal titles had been created: Cornwall, Lancaster, Clarence, Gloucester, York,
Ireland Ireland (, ; ; Ulster Scots dialect, Ulster-Scots: ) is an island in the North Atlantic Ocean, in Northwestern Europe. Geopolitically, the island is divided between the Republic of Ireland (officially Names of the Irish state, named Irelan ...
,
Hereford Hereford ( ) is a cathedral city and the county town of the ceremonial county of Herefordshire, England. It is on the banks of the River Wye and lies east of the border with Wales, north-west of Gloucester and south-west of Worcester. With ...
, Aumale,
Exeter Exeter ( ) is a City status in the United Kingdom, cathedral city and the county town of Devon in South West England. It is situated on the River Exe, approximately northeast of Plymouth and southwest of Bristol. In Roman Britain, Exeter w ...
,
Surrey Surrey () is a Ceremonial counties of England, ceremonial county in South East England. It is bordered by Greater London to the northeast, Kent to the east, East Sussex, East and West Sussex to the south, and Hampshire and Berkshire to the wes ...
,
Norfolk Norfolk ( ) is a Ceremonial counties of England, ceremonial county in England, located in East Anglia and officially part of the East of England region. It borders Lincolnshire and The Wash to the north-west, the North Sea to the north and eas ...
,
Bedford Bedford is a market town in Bedfordshire, England. At the 2011 Census, the population was 106,940. Bedford is the county town of Bedfordshire and seat of the Borough of Bedford local government district. Bedford was founded at a ford (crossin ...
,
Somerset Somerset ( , ), Archaism, archaically Somersetshire ( , , ) is a Ceremonial counties of England, ceremonial county in South West England. It is bordered by the Bristol Channel, Gloucestershire, and Bristol to the north, Wiltshire to the east ...
,
Buckingham Buckingham ( ) is a market town in north Buckinghamshire, England, close to the borders of Northamptonshire and Oxfordshire, which had a population of 12,890 at the United Kingdom Census 2011, 2011 Census. The town lies approximately west of ...
, Warwick and
Suffolk Suffolk ( ) is a ceremonial county in the East of England and East Anglia. It is bordered by Norfolk to the north, the North Sea to the east, Essex to the south, and Cambridgeshire to the west. Ipswich is the largest settlement and the county ...
. Some became extinct, others had multiple creations, and some had merged with the crown upon the holder's accession to the throne. When the Plantagenet dynasty came to an end at the
Battle of Bosworth Field The Battle of Bosworth or Bosworth Field ( ) was the last significant battle of the Wars of the Roses, the civil war between the houses of House of Lancaster, Lancaster and House of York, York that extended across England in the latter half ...
on 22 August 1485, only four ducal titles remained extant, of which two were now permanently associated with the crown. John de la Pole was Duke of Suffolk and John Howard was Duke of Norfolk (2nd creation), while the duchy of Cornwall was reserved as a title and source of income for the eldest son of the sovereign, and the duchy of Lancaster was now held by the monarch. Norfolk perished alongside
Richard III Richard III (2 October 1452 – 22 August 1485) was King of England from 26 June 1483 until his death in 1485. He was the last king of the Plantagenet dynasty and its cadet branch the House of York. His defeat and death at the Battle of Boswor ...
at Bosworth field, and the title was forfeit. It was restored to his son Thomas thirty years later by
Henry VIII Henry VIII (28 June 149128 January 1547) was King of England from 22 April 1509 until his death in 1547. Henry is known for his Wives of Henry VIII, six marriages and his efforts to have his first marriage (to Catherine of Aragon) annulled. ...
, as one of a number of dukes created or recreated by the Tudor dynasty over the ensuing century. England's premier ducal title, Norfolk, remains in the Howard family to this day.


Modern age

In the 19th century, the sovereign dukes of
Parma Parma (; ) is a city in the northern Italian region of Emilia-Romagna known for its architecture, Giuseppe Verdi, music, art, prosciutto (ham), Parmesan, cheese and surrounding countryside. With a population of 198,986 inhabitants as of 2025, ...
and
Modena Modena (, ; ; ; ; ) is a city and ''comune'' (municipality) on the south side of the Po Valley, in the Province of Modena, in the Emilia-Romagna region of northern Italy. It has 184,739 inhabitants as of 2025. A town, and seat of an archbis ...
in Italy, and of Anhalt, Brunswick-Lüneburg, Nassau, Saxe-Coburg-Gotha, Saxe-Meiningen and Saxe-Altenburg in Germany survived Napoleon's reorganization. Since the unification of Italy in 1870 and the end of monarchy in Germany in 1918, there have no longer been any
reign A reign is the period of a person's or dynasty's occupation of the office of monarch of a nation (e.g., King of Saudi Arabia, Saudi Arabia, List of Belgian monarchs, Belgium, Co-princes of Andorra, Andorra), of a people (e.g., List of Frankish kin ...
ing dukes in Europe;
Luxembourg Luxembourg, officially the Grand Duchy of Luxembourg, is a landlocked country in Western Europe. It is bordered by Belgium to the west and north, Germany to the east, and France on the south. Its capital and most populous city, Luxembour ...
is ruled by a
grand duke Grand duke (feminine: grand duchess) is a European hereditary title, used either by certain monarchs or by members of certain monarchs' families. The title is used in some current and former independent monarchies in Europe, particularly: * in ...
, a higher title, just below king. In the United Kingdom, the inherited position of a duke along with its dignities, privileges, and rights is a dukedom. However, the title of ''duke'' has never been associated with independent rule in the British Isles: they hold dukedoms, not duchies (excepting the Duchy of Cornwall and the Duchy of Lancaster). Dukes in the United Kingdom are addressed as "Your Grace" and referred to as "His Grace". Currently, there are thirty-five dukedoms in the
Peerage of England The Peerage of England comprises all peerages created in the Kingdom of England before the Act of Union in 1707. From that year, the Peerages of England and Scotland were closed to new creations, and new peers were created in a single Peerag ...
,
Peerage of Scotland The Peerage of Scotland (; ) is one of the five divisions of peerages in the United Kingdom and for those peers created by the King of Scots before 1707. Following that year's Treaty of Union 1707, Treaty of Union, the Kingdom of Scots and the ...
,
Peerage of Great Britain The Peerage of Great Britain comprises all extant peerages created in the Kingdom of Great Britain between the Acts of Union 1707 and the Acts of Union 1800. It replaced the Peerage of England and the Peerage of Scotland, but was itself repla ...
,
Peerage of Ireland The peerage of Ireland consists of those Peerage, titles of nobility created by the English monarchs in their capacity as Lordship of Ireland, Lord or Monarchy of Ireland, King of Ireland, or later by monarchs of the United Kingdom of Great B ...
and Peerage of the United Kingdom, held by thirty different people, as three people hold two dukedoms and two hold three (see List of dukes in the peerages of Britain and Ireland). All dukedoms in the UK apart from the Dukedom of Lancaster and the Dukedom of Edinburgh, which is held for life by the current duke, are inherited through the male line only, although dukedoms such as Marlborough and Fife (second creation) have passed through the female line for one generation under terms of a special remainder for lack of male heirs of the initial grantee. Henrietta, 2nd Duchess of Marlborough and Her Highness Princess Alexandra (HRH Princess Arthur of Connaught), 2nd Duchess of Fife were duchesses in their own right. Both were succeeded in their titles by nephews born by younger sisters of the duchesses. The word ''duchess'' is normally only used for the wife of a duke. Dukes of Lancaster are called dukes even when they are female, and by tradition the monarch of the UK, whether male or female, is known in the Channel Islands as the Duke of Normandy.


Royal dukes

Various royal houses traditionally awarded (mainly) dukedoms to the sons and in some cases, the daughters, of their respective sovereigns; others include at least one dukedom in a wider list of similarly granted titles, nominal dukedoms without any actual authority, often even without an estate. Such titles are still conferred on royal princes or princesses in the current European monarchies of Belgium, Spain, Sweden and the United Kingdom. Other historical cases occurred for example in Denmark, Finland (as a part of Sweden) and France, Portugal and some former colonial possessions such as Brazil and Haiti.


United Kingdom

In the United Kingdom, a royal duke is a duke who is a member of the British royal family, entitled to the
style Style, or styles may refer to: Film and television * ''Style'' (2001 film), a Hindi film starring Sharman Joshi, Riya Sen, Sahil Khan and Shilpi Mudgal * ''Style'' (2002 film), a Tamil drama film * ''Style'' (2004 film), a Burmese film * '' ...
of " His Royal Highness". Ducal titles which have been given within the royal family include
Duke of Cornwall Duke of Cornwall () is a title in the Peerage of England, traditionally held by the eldest son of the reigning Monarchy of the United Kingdom, British monarch, previously the English monarch. The Duchy of Cornwall was the first duchy created i ...
,
Duke of Lancaster The dukedom of Lancaster is a former Peerage of England, English peerage, created three times in the Middle Ages, which finally merged in the Crown when Henry V of England, Henry V succeeded to the throne in 1413. Despite the extinction of the ...
, Duke of Clarence, Duke of York, Duke of Gloucester, Duke of Bedford, Duke of Cumberland, Duke of Cambridge, Duke of Rothesay, Duke of Albany, Duke of Ross, Duke of Edinburgh, Duke of Kent, Duke of Sussex, and Duke of Connaught and Strathearn. Following his Edward VIII abdication crisis, abdication in 1936 the former King Edward VIII was given the title Duke of Windsor. There are also non-royal dukes in the United Kingdom.


Belgium

In Belgium, the title of Duke of Brabant (historically the most prestigious in the Low Countries, and containing the federal capital Brussels) is awarded to the heir apparent of the monarch, other dynasts receiving various lower historical titles (much older than Belgium, and in principle never fallen to the Belgian crown), such as Count of Flanders (King Leopold III's so-titled brother Prince Charles, Count of Flanders, Charles held the title when he became the realm's temporary head of state as prince-regent) and Prince of Liège (a secularised version of the historical prince-bishopric; e.g. Albert II of Belgium, King Albert II until he succeeded his older brother Baudouin I).


Iberian peninsula

When the Christians, Christian Reconquista, sweeping the Moors from the former Caliph of Cordoba, Caliphate of Córdoba and its Taifa, taifa-remnants, transformed the territory of former Suebi, Suevic and Visigoths, Visigothic realms into Roman Catholic Church, Catholic Feudalism, feudal principalities, none of these warlords was exactly styled duke. A few (as Portugal County of Portugal, itself) started as count (even if the title of ''dux'' was sometimes added), but soon all politically relevant princes were to use the royal style of king.


Portugal

In Portugal, the title of duke was granted for the first time in 1415 to Pedro, Duke of Coimbra, infante Peter and Henry the Navigator, infante Henry, the second and third sons of king John I of Portugal, John I, following their participation in the successful Conquest of Ceuta. Pedro became the first Duke of Coimbra and Henry the first Duke of Viseu. From the reign of king Manuel I of Portugal, Manuel I, the title of Duke of Beja was given to the second son of the monarch. This was changed during the Liberal regime in the 19th century (with Maria II of Portugal, Queen Maria II), when the first infante (second son of the monarch) got the title of Duke of Porto and the second infante (third son) was known as Duke of Beja. There are examples of duke as a subsidiary title, granted to the most powerful noble houses: * Duke of Barcelos, to be used by the heir of the Duke of Braganza; * Duke of Torres Novas, to be used by the heir of the Duke of Aveiro; * Duke of Miranda do Corvo, to be used by the heir of the Duke of Lafões. Usually, the title of duke was granted to relatives of the royal family, such as the infantes or natural sons of the monarch. There are exceptions, such as António José de Ávila, 1st Duke of Ávila and Bolama, António José de Ávila, who, although not having any relation to the royal family, was given the title of Duke of Ávila and Bolama in the 19th century.


Spain

Spanish infantes and infantas are usually given a royal dukedom upon marriage, excepting the heir apparent who is the Prince of Asturias. Those titles are nowadays not hereditary but carry a Grandee, grandeeship of Spain. The current royal duchesses are Infanta Margarita, Duchess of Soria (although she inherited the title of Duke of Hernani, Duchess of Hernani from her cousin and is the second holder of the title), and Infanta Elena, Duchess of Lugo. In Spain all dukes hold the court rank of grandee, which has precedence over all other noble titles. The last non-royal hereditary dukedom created was the title of Duke of Suárez in favour of former primer minister Adolfo Suárez in 1981. Since the accession of Felipe VI, King Felipe VI to the Monarchy of Spain, throne in 2014, no new noble title has been created.


Nordic countries

The Northern European duchies of Halland, Jutland, Lolland, Osilia and Reval existed in the Middle Ages. The longest-surviving duchy was Schleswig, i.e., ''Sonderjylland'' (a portion of which later became part of Germany). Its southern neighbor, the duchy of Holstein, in personal union with the Danish crown, was nonetheless always a German principality. The two duchies jointly became a member of the German States of Germany, ''Bundesland'' as "Schleswig-Holstein" in the 19th century.


Denmark

Beginning in the 11th century, Danish kings frequently awarded the title of ''jarl'' (earl) or duke of Duchy of Schleswig, Schleswig to a younger son of the monarch. Short-lived dukedoms were created for the same purpose in Lolland and Halland. After the accession to the throne of Christian I of Denmark, Christian I, a complex system of appanages were created for male-line descendants of the king, being granted non-sovereign ducal titles in both Schleswig and Duchy of Holstein, Holstein, e.g. Duke of Gottorp, Duke of Sønderborg, Duke of Augustenborg, Duke of Franzhagen, Duke of Beck, Duke of Glücksburg and Duke of Nordborg. This arrangement occurred in both territories despite Schleswig being a fief of Denmark and Holstein being a fief of the Holy Roman Empire.


Finland

Key parts of Finland were sometimes under a Duke of Finland during the Swedish reign (until 1809). Some of the provinces are still considered duchies for the purposes of heraldry.


Norway

In Norway, Skule Bårdsson was first ''jarl'' in 1217, and as such got responsibility for the army, and then in 1237, as another attempt at compromise, Skule was given the first Norwegian title of duke (''hertug''). There is no indication that those two titles meant the same thing, or was mixed. He was first ''jarl'', and then also ''hertug'', but after he became ''hertug'' he kept the title ''jarl''.


Sweden

Sweden has a history of making the sons of its kings ruling princes of vast duchies, but this ceased in 1622. Only one non-royal person was ever given a dukedom. In 1772, King Gustav III of Sweden, Gustav III reinstated the appointment of titular dukes but as a non-hereditary title for his brothers. Since then, all Swedish princes have been created dukes of a province at birth. When the Act of Succession (1810), 1810 Act of Succession was amended to allow female succession to the throne, King Carl XVI Gustaf's eldest daughter Crown Princess Victoria, Victoria became Crown Princess (displacing her younger brother Prince Carl Philip, Duke of Värmland, Carl Philip) and received the title of Duchess of Västergötland. The practice of conferring ducal titles has since extended to Swedish princesses as well as princes. Currently, there are five dukes and four duchesses in their own right. The territorial designations of these dukedoms refer to ten of the Provinces of Sweden.


France

The highest precedence in the realm, attached to a feudal territory, was given to the twelve original pairies (en: ''peers''), who also had a traditional function in the royal coronation, comparable to the German imperial archoffices. Half of them were ducal: three ecclesiastical (the six prelates all ranked above the six secular peers of the realm) and three temporal, each time above three counts of the same social estate. The ''Prince-Bishops'' with ducal territories among them were: * The Archbishop of Reims, styled ''archevêque-duc pair de France'' (in Champagne; who crowns and anoints the king, traditionally in his cathedral) * Two suffragan bishops, styled ''evêque-duc pair de France'' : ** the bishop-duke of Laon (in Picardy; bears the 'Sainte Ampoule' containing the sacred ointment) ** the bishop-duc de Langres (in Burgundy; bears the scepter) Later, the Archbishop of Paris was given the title of ''duc de Saint-Cloud'' with the dignity of peerage, but it was debated if he was an ecclesiastical peer or merely a bishop holding a lay peerage. The secular dukes in the peerage of the realm were, again in order of precedence: * The Duke of Burgundy or ''duc de Bourgogne'' (known as ''Grand duc''; not a separate title at that time; just a description of the wealth and real clout of the 15th-century dukes, cousins of the kings of France) (bears the crown, fastens the belt) * The
Duke of Normandy In the Middle Ages, the duke of Normandy was the ruler of the Duchy of Normandy in north-western France. The duchy arose out of a grant of land to the Viking leader Rollo by the French king Charles the Simple in 911. In 924 and again in 933, N ...
or ''duc de Normandie ''(holds the first square banner) * The Duke of Aquitaine or ''duc d'Aquitaine'' or ''de Guyenne'' (holds the second square banner) The theory of the participation of the peers in the coronation was laid down in the late 13th century, when some of the peerage (the Duchy of Normandy and the County of Toulouse) had already been merged in the crown. At the end of this same century, the king elevated some counties into duchies, a practice that increased up until the Revolution. Many of these duchies were also peerages (the so-called 'new peerages').


Italy, Germany and Austria

In Northern Italy, Germany and Austria the title of "duke" (''duca'' in Italian, and ''Herzog'' in German) was quite common. As the Holy Roman Empire (HRE) was until its dissolution a feudal structure, most of its Dukes were actually reigning in their lands. As the titles from the HRE were taken over after its dissolution, or in Northern Italy after their territories became independent of the Empire, both countries also had a share of fully sovereign dukes. Also, in Germany in many ducal families every agnate would bear the ducal title of the family as a courtesy title. In Northern Italy some important sovereign ducal families were the Visconti of Milan, Visconti and the Sforza, who ruled Duchy of Milan, Milan; the House of Savoy, Savoy in Piedmont; the Medici of Florence; the House of Farnese, Farnese of Duchy of Parma, Parma and Piacenza; the Cybo, Cybo-Malaspina of Massa, Tuscany, Massa; the House of Gonzaga, Gonzaga of Duchy of Mantua, Mantua; the House of Este, Este of Duchy of Modena and Reggio, Modena and Duchy of Ferrara, Ferrara. In Germany, important ducal families were the House of Wittelsbach, Wittelsbachs in Duchy of Bavaria, Bavaria, the Welfs in Electorate of Hanover, Hannover, the ducal family of Duchy of Cleves, Cleves, the House of Wettin, Wettins in Duchy of Saxony, Saxony (with its Ernestine duchies, Ernestine branch divided into several duchies), the List of rulers of Württemberg, Württembergs and the House of Mecklenburg, Mecklenburgs. In the German Confederation the House of Nassau, Nassaus, the House of Ascania, Ascanians of Anhalt, the Welf branch of Duchy of Brunswick, Brunswick and the Ernestine lines of the Saxon duchies were the sovereign ducal families. In Austria, "Archduke" was the title borne from 1358 by the House of Habsburg, Habsburg rulers of the Archduchy of Austria, and later by all senior members of that dynasty.


Elsewhere in Europe


Hungary

In the Kingdom of Hungary no ducal principalities existed but duchies were often formed for members of the dynasty as appanages. During the rule of the Arpads, Árpád dynasty dukes held territorial powers, some of them even minted coins, but later this title became more often nominal. These duchies usually were * the Duchy of Nitra * the Duchy of Bihar * the Duchy of Transylvania (consisting of the voivodship of Transylvania and some other counties) In the Jagiellonian era (1490–1526) only two dukes did not belong to the royal dynasty: John Corvin (the illegitimate son of Matthias Corvinus) and Lawrence of Ilok, Lőrinc Újlaki (whose father was the titular king of Bosnia (region), Bosnia), and both bore the title as royal dukes. After the Battle of Mohács the Habsburg kings rewarded Hungarian aristocrats (like the House of Esterházy, Esterházys) with princely titles, but they created these titles as Holy Roman Emperors, not as kings of Hungary.


Greece

The Byzantines retained the title ''dux'', transcribed as δούξ (''doux'') in Medieval Greek. As in the later Roman Empire, it remained a military office and was not a feudal or hereditary rank. In the 10th century, it was given to the military commanders over several ''Theme (Byzantine district), themata'' (also known as ''katepano''), and in the late 11th century it became used for the governor of a ''thema''. When the Catholic crusaders overran the Byzantine Empire in the Fourth Crusade, they installed several crusader states (see Frankokratia), some of which were of ducal rank: * the Duchy of Athens, to which the Duchy of Neopatras was later linked * the Aegean insular Duchy of Naxos, officially the "Duchy of the Archipelago" * the Venetian Crete, Venetian colony of Crete (Candia) was initially ruled by the Duke of Candia In Italy and other western countries, the later Byzantine appanages of the Palaiologan period were sometimes translated as duchies: the Despotate of the Morea, Morea, Mesembria, Selymbria and Thessaloniki. The Greek rank of their holders, however, was that of ''despotes''. In the independent Kingdom of Greece (Glücksburg), Kingdom of Greece, the style of Duke of Sparta was instituted in 1868 upon the birth of the future Constantine I of Greece, Constantine I as a distinct title for the Crown Prince of Greece.


Slavic and nearby countries

Generally, confusion reigns whether to translate the usual ruler titles, ''knyaz/ knez/ książe'' etc. as Prince (analogous to the German Fürst) or as Duke; * In splintered Poland petty principalities generally ruled by branches of the earlier Polish Piast dynasty are regarded as duchies in translated titulary. Examples of such: Kujavia, Masovia, Sandomierz, Sandomir, Greater Poland and Kalisz as well as various minor duchies, often short-lived or in personal union or merger, named after their capitals, mainly in the regions known as Lesser Poland, Little Poland and Greater Poland, including (there are often also important Latin or German forms) Kraków, Łęczyca and Sieradz. * In Pomerelia and Pomerania (inhabited by the Kashubians, different Slavic people from the Poles proper), branches of native ruling dynasties were usually recognized as dukes, quite similarly to the pattern in Poland. * In Russia, before the imperial unification from Grand Duchy of Moscow, Muscovy; sometimes even as vassal, tributary to a Tartar Khan (title), Khan; later, in Peter the Great's autocratic empire, the russification gertsog was used as the Russian rendering of the German ducal title ''Herzog'', especially as (the last) part of the full official style of the Russian Emperor: ''Gertsog Shlesvig-Golstinskiy, Stormarnskiy, Ditmarsenskiy I Oldenburgskiy I prochaya, I prochaya, i prochaya'' "Duke of Schleswig-Holstein [see above], Stormarn (gau), Stormarn, Dithmarschen and Oldenburg, and of other lands", in chief of German and Danish territories to which the Tsar was dynastically linked. * In Bohemia was Duchy of Krumlov, and short-lived Napoleon II of France, Duchy of Reichstadt and Duchy of Friedland. * In Silesia were many petty duchies as Duchy of Brzeg, Duchy of Legnica, Duchy of Zator and Duchy of Racibórz. They were vassals of List of rulers of Bohemia, King of Bohemia. *In Lithuania, the approximate equivalent of a duke or prince was called ''kunigaikštis'' in the Lithuanian language. Latin translation was ''dux'' meaning "duke" in the Middle Ages, whereas Latin for "prince" is ''princeps''. The overall leader of the Lithuanian dukes (Lithuanian language, Lith. plural: ''kunigaikščiai'') was the
grand duke Grand duke (feminine: grand duchess) is a European hereditary title, used either by certain monarchs or by members of certain monarchs' families. The title is used in some current and former independent monarchies in Europe, particularly: * in ...
(Lithuanian language, Lith.: ''didysis kunigaikštis'',
Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
: ''magnus dux''), who acted as the monarch of the Grand Duchy of Lithuania until 1795 when Russians took over the land.


Netherlands

After Belgium and the Netherlands separated in 1830, the title of duke no longer existed in the Netherlands. There is, however, one exception; the title ''Hertog van Limburg'' (''Duke of Limburg'') still exists. This title, however, is an exclusive title for the head of state (the monarch, i.e., the king or queen of the Netherlands).


Georgia

In Georgia, the title of ''eristavi'' is equivalent to duke. The word means "head of the nation" or "head of the army". A duke ruled a duchy (saeristavo); a duke of two or more duchies was called ''eristavt-eristavi'', duke of dukes. In the 6th to 9th centuries, Iberia was ruled by Erismtavari, a title similar to
grand duke Grand duke (feminine: grand duchess) is a European hereditary title, used either by certain monarchs or by members of certain monarchs' families. The title is used in some current and former independent monarchies in Europe, particularly: * in ...
. Erismtavari was the first among equal dukes. Georgians use the title ''eristavi'' only for Georgian dukes. When talking about foreign dukes, they use the German word ''Herzog'', which is the German equivalent of "duke". In the late 15th and early 16th century, the kingdom of Georgia collapsed and most of the western Georgian dukes became princes. In the 19th century the title of ''eristavi'' was abolished by the Russian conquerors and the former dukes took the word ''Eristavi'' as their last names.


Post-colonial non-European states


Empire of Brazil

In the Empire of Brazil duke was the highest rank for people born outside the imperial house and only three dukedoms were created. Two of these titles were for relatives of Pedro I of Brazil, Emperor Pedro I: an illegitimate daughter and a Auguste de Beauharnais, 2nd Duke of Leuchtenberg, brother-in-law who received the title when married to Pedro I's daughter Maria II of Portugal, Maria II. The third, given to Luís Alves de Lima e Silva, Duke of Caxias, Luís Alves de Lima e Silva, was the only dukedom created during the reign of Pedro II of Brazil, Pedro II. None of these titles were hereditary, just like every other title in the Brazilian nobility system.


Haiti

The royal Henri Christophe, Christophe dynasty created eight hereditary dukedoms, in rank directly below the nominal princes. They were short-lived and only recognized in the country.


Analogues

Like other major Western noble titles, Duke is sometimes used to render (translate) certain titles in non-western languages. "Duke" is used even though those titles are generally etymologically and often historically unrelated and thus hard to compare. However, they are considered roughly equivalent, especially in hierarchic aristocracies such as feudal Japan, useful as an indication of relative rank.


Indian Subcontinent

The Indian feudalism, Indian feudal system cannot be fully translated to its European counterparts. The closest equivalent to the title of Sovereign Duke is Rao (title), Rao and Nawab to a feudal
duchy A duchy, also called a dukedom, is a country, territory, fiefdom, fief, or domain ruled by a duke or duchess, a ruler hierarchically second to the king or Queen regnant, queen in Western European tradition. There once existed an important differe ...
, a large jagir. Thus, a Rao (in the ruling system) or a Jagirdar, Deshmukh, Patil, and Zamindar (in a feudal way) are closely equivalent to a Duke.


Turkey, Afghanistan and Iran

''Duke'' in Turkey, Afghanistan, and Iran after Mongolian war against them, was added as generals and kings of districts or states. In the Kingdom of Persians and Ottomans, the systems cannot be fully translated to its European counterparts so they called those generals and kings as Khan (title), Khan, a Mongolian royal and noble rank from the Turco-Mongol word for "lord", analogous to Duke. After revolutions and the falling Empire system in those countries (changing the ruling system to democratic and republic systems), those Khans and the other equal ranks titles added to the titleholder's surnames, and the ranking system, as usual, was disqualified as an official ranking.


China

During the era of ''fengjian'' in History of China#Ancient China, Ancient China (Western Zhou, Spring and Autumn period and the Warring States period), the Zhou dynasty nobility, title of ''Gong (title), gōng'' (wikt:公, 公; sometimes translated as "Duke", sometimes as "Lord") was sparingly granted. Under the principle of "Three Deferences and Two Royal Descendants" (三恪二王後), the three former royal houses were granted the title of ''gōng''; however, not all scholars recognize such a tradition in the Western Zhou dynasty. For that dynasty, this would be the descendants of the Xia dynasty and Shang dynasty; their dukedoms were respectively Qi (Henan), Qi (杞) and Song (state), Song (宋). According to tradition, these states were considered the king's guests rather than subjects. However, recent scholarship has identified multiple other meanings for ''gōng'', including the patriarch of a lineage, a non-inheritable title signifying a very broad and senior position within the court, or a respectful appellation for any regional ruler or deceased ancestor. In works like ''Mencius (book), Mencius'' and others that date to the Warring States period, ''gōng'' was interpreted as the highest in the "five ranks of nobles" (:zh:五等爵, 五等爵) attributed to the Western Zhou dynasty. However, the title was not in use until the end of the Western Han, granted to the descendants of the Shang dynasty, Shang and Zhou royal houses and the eventual usurper Wang Mang. It was also granted to Cao Cao. The title during the Han was inferior to that of prince (諸侯王), which was only available to imperial princes. The "five ranks of nobles" were implemented as such during the Jin dynasty (266–420), Jin dynasty (晉朝). During the Southern dynasties, usurpers typically sought the title of duke, then prince, before compelling the monarch to abdicate. The Duke of Yansheng noble title was granted to the descendants of Confucius. In 1935, the Kuomintang, Nationalist Government changed the title to Sacrificial Official to Confucius (大成至聖先師奉祀官), which still exists as a hereditary office of the Republic of China. The title ''gōng'' and others were also awarded, sometimes posthumous names, posthumously, during the imperial period of Chinese history to recognize distinguished civil and military officials. These could include a taxable base for the official, or could be purely honorary. For example, Emperor Lizong of Song granted the posthumous title Duke of Hui (徽國公) to the Neo-Confucian thinker Zhu Xi.


Indonesia

The Javanese kingdom of Majapahit, which dominated eastern Java in the 14th and 15th centuries, was divided into ''nagara'' (provinces). The administration of these ''nagara'' was entrusted to members of the royal family, who bore the title of ''Bhre''—i.e., ''Bhra I'', "lord of" (the word ''bhra'' being akin to the Thai language, Thai ''Thai nobility, Phra''), followed by the name of the land they were entrusted with: for example, a sister of the king Hayam Wuruk ( 1350–1389) was "Bhre Lasem", "lady of Lasem". This system was similar to the Apanage system in Western Europe. Sultan Agung, king of Mataram Sultanate, Mataram in Central Java ( 1613–1645), would entrust the administration of territories he gradually conquered all over the island of Java, to officials bearing the title of ''Adipati'', this title is hereditary. Such territories were called ''Kadipaten''. Prior to the unification of Java by Sultan Agung, independent ''kadipaten''s also exist, e.g. the Duchy of Surabaya which was Mataram conquest of Surabaya, conquered by Agung in 1625. The Dutch East India Company, VOC (Dutch East Indies Company), while gradually taking control of Javanese territory, would maintain the existing Mataram administrative structure. ''Adipati'' were called "''regenten''" in Dutch, and the territories they administered, "''List of regencies and cities of Indonesia, regentschappen''". In the 19th century, the Javanese term for 'regent' was ''bupati''. French traveller Gérard Louis Domeny de Rienzi mentions ''bapati''. The ''bupati'' have been maintained in the modern Indonesian administrative subdivision structure, heading a ''Regency (Indonesia), kabupaten'', the subdivision of a ''provinces of Indonesia, provinsi'' or province. The word ''Adipati'' is still found in the official title of the hereditary dukes Mangkunegaran Palace, Mangkunegara of Surakarta and Pakualaman, Paku Alam of Yogyakarta—i.e., ''Kanjeng Gusti Pangeran Adipati Arya'' (shortened into KGPAA).


Nigeria

In the Kingdom of Benin, a viceroyal Nigerian chieftaincy, chieftain that is known as an ''Enogie'' in the Edo language is usually referred to as a duke in English. Often a cadet of the dynasty that produces the oba of Benin, the enogie is expected to rule his domain as he sees fit, subject to the approval of the oba. In Ife, Oyo Empire, Oyo and the other kingdoms of Nigerian Yorubaland, a viceroyal chieftain is known as a ''Baale (title), Baale'' in the Yoruba language. He is barred from wearing a crown as a matter of tradition and is generally seen as the reigning representative of his Oba (ruler), oba, the monarch who has the right to wear one.


Myanmar

In Myanmar (Burma), since the Bagan, Pagan era of 11th century, each and every single one of the royal family received the title of ''Myosa'' (also ''Myoza''), literally means chief of town or territory, which is equivalent to the title of Duke. All royals were given the honor to possess at least one territory by the King. They all were mostly called by their possessions. For instance, Burma's last king, King Thibaw was called by his possession, when he was a prince, of a town Thibaw (Hsipaw in Shan State).


See also

* Archduke * Grand Duke * Other titles derived from Dux ** Doge (disambiguation), Doge ** Duce ** Megas doux * Duchy ** Duchies in Sweden ** Duchy of Amalfi ** Duchy of Brittany ** Duchy of Gaeta ** Duchy of Naples * Grand Duchy * Lists of dukes * List of fictional dukes and duchesses *


References


General sources

* Thomas Hodgkin (historian), Hodgkin, Thomas. ''Italy and her Invaders''. Clarendon Press: 1895. * Lewis, Archibald R. "The Dukes in the Regnum Francorum, A.D. 550–751". ''Speculum'', Vol. 51, No 3 (July 1976), pp. 381–410. * * Frank Stenton, Stenton, Sir Frank M. ''Anglo-Saxon England Third Edition''. Oxford University Press: 1971. * Thompson, E. A. ''The Goths in Spain''. Clarendon Press: Oxford, 1969. {{Authority control Dukes, Noble titles Peerage Feudalism Men's social titles