Caesar (title)
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Caesar ( English  Caesars;
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 ...
 ; in Greek: ) is a title of imperial character. It derives from the ''
cognomen A ''cognomen'' (; : ''cognomina''; from ''co-'' "together with" and ''(g)nomen'' "name") was the third name of a citizen of ancient Rome, under Roman naming conventions. Initially, it was a nickname, but lost that purpose when it became hereditar ...
'' of
Julius Caesar Gaius Julius Caesar (12 or 13 July 100 BC – 15 March 44 BC) was a Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in Caesar's civil wa ...
. The change from being a surname to a title used by the Roman emperors can be traced to AD 68, following the fall of the
Julio-Claudian dynasty The Julio-Claudian dynasty comprised the first five Roman emperors: Augustus, Tiberius, Caligula, Claudius, and Nero. This line of emperors ruled the Roman Empire, from its formation (under Augustus, in 27 BC) until the last of the line, Emper ...
. When used on its own, the title denoted heirs apparent, who would later adopt the title ''
Augustus Gaius Julius Caesar Augustus (born Gaius Octavius; 23 September 63 BC – 19 August AD 14), also known as Octavian (), was the founder of the Roman Empire, who reigned as the first Roman emperor from 27 BC until his death in A ...
'' on accession. The title remained an essential part of the style of the emperors, and became the word for "
emperor The word ''emperor'' (from , via ) can mean the male ruler of an empire. ''Empress'', the female equivalent, may indicate an emperor's wife (empress consort), mother/grandmother (empress dowager/grand empress dowager), or a woman who rules ...
" in some languages, such as German () and Slavic ().


Origins

The first known individual to bear the ''cognomen'' of "Caesar" was Sextus Julius Caesar, who is likewise believed to be the common ancestor of all subsequent Julii Caesares. Sextus's great-grandson was the dictator Gaius Julius Caesar, who seized control of the
Roman Republic The Roman Republic ( ) was the era of Ancient Rome, classical Roman civilisation beginning with Overthrow of the Roman monarchy, the overthrow of the Roman Kingdom (traditionally dated to 509 BC) and ending in 27 BC with the establis ...
following his war against the
Senate A senate is a deliberative assembly, often the upper house or chamber of a bicameral legislature. The name comes from the ancient Roman Senate (Latin: ''Senatus''), so-called as an assembly of the senior (Latin: ''senex'' meaning "the el ...
. He appointed himself as ("dictator in perpetuity"), a title he held for only about a month before he was assassinated in 44 BC. Julius Caesar's death did not lead to the restoration of the Republic, and instead led to the rise of the
Second Triumvirate The Second Triumvirate was an extraordinary commission and magistracy created at the end of the Roman republic for Mark Antony, Lepidus, and Octavian to give them practically absolute power. It was formally constituted by law on 27 November ...
, which was made up of three generals, including Julius' adopted son Gaius Octavius. Following
Roman naming conventions Over the course of some fourteen centuries, the Ancient Rome, Romans and other peoples of Italy employed a system of nomenclature that differed from that used by other cultures of Europe and the Mediterranean Sea, consisting of a combination of g ...
, Octavius adopted the name of his adoptive father, thus also becoming "Gaius Julius Caesar", though he was often called "Octavianus" to avoid confusion. He styled himself simply as "Gaius Caesar" to emphasize his relationship with Julius Caesar. Eventually, distrust and jealousy between the triumvirs led to a lengthy civil war which ultimately ended with Octavius gaining control of the entire Roman world in 30 BC. In 27 BC, Octavius was given the honorific ''
Augustus Gaius Julius Caesar Augustus (born Gaius Octavius; 23 September 63 BC – 19 August AD 14), also known as Octavian (), was the founder of the Roman Empire, who reigned as the first Roman emperor from 27 BC until his death in A ...
'' by the Senate, adopting the name of "Imperator Caesar Augustus". He had previously dropped all his names except for "Caesar", which he treated as a '' nomen'', and had adopted the victory title '' imperator'' ("commander") as a new ''
praenomen The praenomen (; plural: praenomina) was a first name chosen by the parents of a Ancient Rome, Roman child. It was first bestowed on the ''dies lustricus'' (day of lustration), the eighth day after the birth of a girl, or the ninth day after the ...
''. As a matter of course, Augustus's own adopted son and successor,
Tiberius Tiberius Julius Caesar Augustus ( ; 16 November 42 BC – 16 March AD 37) was Roman emperor from AD 14 until 37. He succeeded his stepfather Augustus, the first Roman emperor. Tiberius was born in Rome in 42 BC to Roman politician Tiberius Cl ...
, followed his (step)father's example and bore the name "Caesar" following his adoption on 26 June 4 AD, restyling himself as "Tiberius Julius Caesar". Upon his own ascension to the throne, he styled himself as "Tiberius Caesar Augustus". The precedent was thus then set: the Emperor, styled as "Augustus", designated his successor by adopting him and giving him the name "Caesar". The fourth emperor,
Claudius Tiberius Claudius Caesar Augustus Germanicus ( ; ; 1 August 10 BC – 13 October AD 54), or Claudius, was a Roman emperor, ruling from AD 41 to 54. A member of the Julio-Claudian dynasty, Claudius was born to Nero Claudius Drusus, Drusus and Ant ...
(in full, "Tiberius Claudius Caesar Augustus"), was the first to assume the name without having been adopted by the previous emperor. However, he was at least a member of the
Julio-Claudian dynasty The Julio-Claudian dynasty comprised the first five Roman emperors: Augustus, Tiberius, Caligula, Claudius, and Nero. This line of emperors ruled the Roman Empire, from its formation (under Augustus, in 27 BC) until the last of the line, Emper ...
, being the maternal great-nephew of Augustus on his mother's side, the nephew of Tiberius, and the uncle of
Caligula Gaius Caesar Augustus Germanicus (31 August 12 – 24 January 41), also called Gaius and Caligula (), was Roman emperor from AD 37 until his assassination in 41. He was the son of the Roman general Germanicus and Augustus' granddaughter Ag ...
(who was also called "Gaius Julius Caesar"). Claudius, in turn, adopted his stepson and grand-nephew Lucius Domitius Ahenobarbus, giving him the name "Caesar" in addition to his own ''nomen'', "Claudius". His stepson thus became "
Nero Nero Claudius Caesar Augustus Germanicus ( ; born Lucius Domitius Ahenobarbus; 15 December AD 37 – 9 June AD 68) was a Roman emperor and the final emperor of the Julio-Claudian dynasty, reigning from AD 54 until his ...
Claudius Caesar Augustus".


Dynastic title

The first emperor to assume both the position and name without any real claim was Galba, who took the throne under the name "Servius Galba Caesar Augustus" following the death of Nero in AD 68. Galba helped solidify "Caesar" as the title of the designated heir by giving it to his own adopted heir, Piso Licinianus. His reign did not last long, however, and he was soon killed by
Otho Otho ( ; born Marcus Salvius Otho; 28 April 32 – 16 April 69) was Roman emperor, ruling for three months from 15 January to 16 April 69. He was the second emperor of the Year of the Four Emperors. A member of a noble Etruscan civilization, ...
, who became "Marcus Otho Caesar Augustus". Otho was then defeated by Vitellius, who became "Aulus Vitellius Germanicus Augustus", adopting the victory title "Germanicus" instead. Nevertheless, "Caesar" had become such an integral part of the imperial dignity that its place was immediately restored by
Vespasian Vespasian (; ; 17 November AD 9 – 23 June 79) was Roman emperor from 69 to 79. The last emperor to reign in the Year of the Four Emperors, he founded the Flavian dynasty, which ruled the Empire for 27 years. His fiscal reforms and consolida ...
, who ended the civil war and established the
Flavian dynasty The Flavian dynasty, lasting from 69 to 96 CE, was the second dynastic line of emperors to rule the Roman Empire following the Julio-Claudian dynasty, Julio-Claudians, encompassing the reigns of Vespasian and his two sons, Titus and Domitian. Th ...
in AD 69, ruling as "Imperator Caesar Vespasianus Augustus". The placement of the name "Caesar" varied among the early emperors. It usually came right before the ''
cognomen A ''cognomen'' (; : ''cognomina''; from ''co-'' "together with" and ''(g)nomen'' "name") was the third name of a citizen of ancient Rome, under Roman naming conventions. Initially, it was a nickname, but lost that purpose when it became hereditar ...
'' (
Vespasian Vespasian (; ; 17 November AD 9 – 23 June 79) was Roman emperor from 69 to 79. The last emperor to reign in the Year of the Four Emperors, he founded the Flavian dynasty, which ruled the Empire for 27 years. His fiscal reforms and consolida ...
,
Titus Titus Caesar Vespasianus ( ; 30 December 39 – 13 September AD 81) was Roman emperor from 79 to 81. A member of the Flavian dynasty, Titus succeeded his father Vespasian upon his death, becoming the first Roman emperor ever to succeed h ...
,
Domitian Domitian ( ; ; 24 October 51 – 18 September 96) was Roman emperor from 81 to 96. The son of Vespasian and the younger brother of Titus, his two predecessors on the throne, he was the last member of the Flavian dynasty. Described as "a r ...
,
Trajan Trajan ( ; born Marcus Ulpius Traianus, 18 September 53) was a Roman emperor from AD 98 to 117, remembered as the second of the Five Good Emperors of the Nerva–Antonine dynasty. He was a philanthropic ruler and a successful soldier ...
,
Hadrian Hadrian ( ; ; 24 January 76 – 10 July 138) was Roman emperor from 117 to 138. Hadrian was born in Italica, close to modern Seville in Spain, an Italic peoples, Italic settlement in Hispania Baetica; his branch of the Aelia gens, Aelia '' ...
); a few placed it right after it ( Galba,
Otho Otho ( ; born Marcus Salvius Otho; 28 April 32 – 16 April 69) was Roman emperor, ruling for three months from 15 January to 16 April 69. He was the second emperor of the Year of the Four Emperors. A member of a noble Etruscan civilization, ...
, Nerva). The imperial formula was finally standardised during the reign of
Antoninus Pius Titus Aelius Hadrianus Antoninus Pius (; ; 19 September 86 – 7 March 161) was Roman emperor from AD 138 to 161. He was the fourth of the Five Good Emperors from the Nerva–Antonine dynasty. Born into a senatorial family, Antoninus held var ...
. Antoninus, born "Titus Aurelius Antoninus", became "Titus Aelius Caesar Antoninus" after his adoption but ruled as "Imperator Caesar Titus Aelius Hadrianus Antoninus Augustus Pius". The imperial formula thus became "''Imperator Caesar'' ame''Augustus''" for emperors. Heir-apparents added "Caesar" to their names, placing it after their ''
cognomen A ''cognomen'' (; : ''cognomina''; from ''co-'' "together with" and ''(g)nomen'' "name") was the third name of a citizen of ancient Rome, under Roman naming conventions. Initially, it was a nickname, but lost that purpose when it became hereditar ...
''. Caesars occasionally were given the honorific '' princeps iuventutis'' ("First among the Youth") and, starting with the 3rd century, '' nobilissimus'' ("Most Noble").


Later developments


Crisis of the Third Century

The popularity of using the title ''caesar'' to designate heirs-apparent increased throughout the third century. Many of the soldier-emperors during the
Crisis of the Third Century The Crisis of the Third Century, also known as the Military Anarchy or the Imperial Crisis, was a period in History of Rome, Roman history during which the Roman Empire nearly collapsed under the combined pressure of repeated Barbarian invasions ...
attempted to strengthen their legitimacy by naming their sons as heirs with the title of ''caesar'', namely
Maximinus Thrax Gaius Julius Verus Maximinus "Thrax" () was a Roman emperor from 235 to 238. Born of Thracian origin – given the nickname ''Thrax'' ("the Thracian") – he rose up through the military ranks, ultimately holding high command in the army of th ...
,
Philip the Arab Philip I (; – September 249), commonly known as Philip the Arab, was Roman emperor from 244 to 249. After the death of Gordian III in February 244, Philip, who had been Praetorian prefect, rose to power. He quickly negotiated peace with the S ...
,
Decius Gaius Messius Quintus Trajanus Decius ( 201June 251), known as Trajan Decius or simply Decius (), was Roman emperor from 249 to 251. A distinguished politician during the reign of Philip the Arab, Decius was proclaimed emperor by his troops a ...
,
Trebonianus Gallus Gaius Vibius Trebonianus Gallus ( 206 – August 253) was Roman emperor from June 251 to August 253, in a joint rule with his son Volusianus. Early life Gallus was born in Italy, in a respected senatorial family with Etruscan ancestry, cer ...
, Gallienus and Carus. With the exception of Verus Maximus and Valerian II all of them were later either promoted to the rank of ''
augustus Gaius Julius Caesar Augustus (born Gaius Octavius; 23 September 63 BC – 19 August AD 14), also known as Octavian (), was the founder of the Roman Empire, who reigned as the first Roman emperor from 27 BC until his death in A ...
'' within their father's lifetime (like Philip II) or succeeded as ''augusti'' after their father's death ( Hostilian and
Numerian Numerian (; died November 284) was Roman emperor from 283 to 284 with his older brother Carinus. They were sons of Carus, a general raised to the office of praetorian prefect under Emperor Probus in 282.Leadbetter, "Carus." Early life and Ca ...
). The same title would also be used in the Gallic Empire, which operated autonomously from the rest of the Roman Empire from 260 to 274, with the final Gallic emperor
Tetricus I Gaius Pius Esuvius Tetricus was a Gallo-Roman culture, Gallo-Roman nobleman who ruled as Augustus, emperor of the Gallic Empire from 271 to 274 AD. He was originally the (provincial governor) of Gallia Aquitania and became emperor after the murd ...
appointing his heir Tetricus II as ''caesar'' and his consular colleague. Despite the best efforts of these emperors, however, the granting of this title does not seem to have made succession in this chaotic period any more stable. Almost all ''caesares'' would be killed before, or alongside, their fathers, or, at best, outlive them for a matter of months, as in the case of Hostilian. The sole ''caesar'' to successfully obtain the rank of ''augustus'' and rule for some time in his own right was Gordian III, and even he was heavily controlled by his court.


Tetrarchy and Diarchy

In 293,
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 ...
established the
Tetrarchy The Tetrarchy was the system instituted by Roman emperor Diocletian in 293 AD to govern the ancient Roman Empire by dividing it between two emperors, the ''augusti'', and their junior colleagues and designated successors, the ''caesares''. I ...
, a system of rule by two senior emperors and two junior colleagues. The two coequal senior emperors were styled identically to previous Emperors, as ''augustus'' (in plural, ''augusti''). The two junior colleagues were styled identically to previous Emperors-designate, as ''nobilissimus caesar''. Likewise, the junior colleagues retained the title ''caesar'' upon becoming full emperors. The ''caesares'' of this period are sometimes referred as "emperors", with the Tetrarchy being a "rule of four emperors", despite being clearly subordinate of the ''augusti'' and thus not actually sovereigns. The Tetrarchy collapsed as soon as Diocletian stepped down in 305, resulting in a lengthy civil war. Constantine reunited the Empire in 324, after defeating the Eastern emperor
Licinius Valerius Licinianus Licinius (; Ancient Greek, Greek: Λικίνιος; c. 265 – 325) was Roman emperor from 308 to 324. For most of his reign, he was the colleague and rival of Constantine I, with whom he co-authored the Edict of Milan that ...
. The tetrarchic division of power was abandoned, although the divisions of the
praetorian prefecture The praetorian prefecture (; in Ancient Greek, Greek variously named ) was the largest administrative division of the Late Antiquity, late Roman Empire, above the mid-level Roman diocese, dioceses and the low-level Roman province, provinces. Praeto ...
s were maintained. The title ''caesar'' continued to be used, but now merely as a ceremorial honorific for young heirs. Constantine had four ''caesares'' at the time of his death: his sons
Constantius II Constantius II (; ; 7 August 317 – 3 November 361) was Roman emperor from 337 to 361. His reign saw constant warfare on the borders against the Sasanian Empire and Germanic peoples, while internally the Roman Empire went through repeated civ ...
, Constantine II, Constans and his nephew Dalmatius, with his eldest son Crispus having been executed in mysterious circumstances earlier in his reign. He would be succeeded only by his three sons, with Dalmatius dying in the summer of 337 in similarly murky circumstances. Constantius II himself would nominate as ''caesares'' his cousins
Constantius Gallus Flavius Claudius Constantius Gallus (326 – 354) was a statesman and ruler in the eastern provinces of the Roman Empire from 351 to 354, as Caesar (title), ''Caesar'' under emperor Constantius II (), his cousin. A grandson of emperor Constantius ...
and Julian in succession in the 350s, although he first executed Gallus and then found himself at war with Julian before his own death. After Julian's revolt of 360, the title fell out of imperial fashion for some time, with emperors preferring simply to elevate their sons directly to ''augustus'', starting with Gratian in 367. The title would be revived in 408 when Constantine III gave it to his son Constans II, and then in 424 when
Theodosius II Theodosius II ( ; 10 April 401 – 28 July 450), called "the Calligraphy, Calligrapher", was Roman emperor from 402 to 450. He was proclaimed ''Augustus (title), Augustus'' as an infant and ruled as the Eastern Empire's sole emperor after the ...
gave it to his nephew
Valentinian III Valentinian III (; 2 July 41916 March 455) was Roman emperor in the Western Roman Empire, West from 425 to 455. Starting in childhood, his reign over the Roman Empire was one of the longest, but was dominated by civil wars among powerful general ...
before successfully installing him upon the western throne as ''augustus'' in 425. Thereafter it would receive limited use in the Eastern Empire; for example, it was given to Leo II in 472 several months before his grandfather's death. In the Western Empire, Palladius, the son of emperor Petronius Maximus, became the last person bearing the title ''caesar'' in 455.


Byzantine Empire

''Caesar'' or ''Kaisar'' () remained a senior court title in the Eastern or
Byzantine Empire The Byzantine Empire, also known as the Eastern Roman Empire, was the continuation of the Roman Empire centred on Constantinople during late antiquity and the Middle Ages. Having survived History of the Roman Empire, the events that caused the ...
. Originally, as in the classical
Roman Empire The Roman Empire ruled the Mediterranean and much of Europe, Western Asia and North Africa. The Roman people, Romans conquered most of this during the Roman Republic, Republic, and it was ruled by emperors following Octavian's assumption of ...
, it was used for the heir apparent, and was first among the "awarded" dignities. From the reign of
Theodosius I Theodosius I ( ; 11 January 347 – 17 January 395), also known as Theodosius the Great, was Roman emperor from 379 to 395. He won two civil wars and was instrumental in establishing the Nicene Creed as the orthodox doctrine for Nicene C ...
, however, most emperors chose to solidify the succession of their intended heirs by raising them to co-emperors, i.e. ''
augustus Gaius Julius Caesar Augustus (born Gaius Octavius; 23 September 63 BC – 19 August AD 14), also known as Octavian (), was the founder of the Roman Empire, who reigned as the first Roman emperor from 27 BC until his death in A ...
''. Hence the title was more frequently awarded to second- and third-born sons, or to close and influential relatives of the Emperor: for example, Alexios Mosele who was the son-in-law of Theophilos (ruled 829–842), Bardas who was the uncle and chief minister of
Michael III Michael III (; 9/10 January 840 – 24 September 867), also known as Michael the Drunkard, was Byzantine emperor from 842 to 867. Michael III was the third and traditionally last member of the Amorian dynasty, Amorian (or Phrygian) dynasty. He ...
(r. 842–867), and Nikephoros II (r. 963–969) who awarded the title to his father, Bardas Phokas. An exceptional case was the conferment of the dignity and its insignia to the Bulgarian khan Tervel by Justinian II (r. 685–695, 705–711) who had helped him regain his throne in 705. The title was awarded to the brother of Empress Maria of Alania, George II of Georgia in 1081. The office enjoyed extensive privileges, great prestige and power. When
Alexios I Komnenos Alexios I Komnenos (, – 15 August 1118), Latinization of names, Latinized as Alexius I Comnenus, was Byzantine Emperor, Byzantine emperor from 1081 to 1118. After usurper, usurping the throne, he was faced with a collapsing empire and ...
created the title of ''
sebastokrator ''Sebastokrator'' (, ; ; ), was a senior court title in the late Byzantine Empire. It was also used by other rulers whose states bordered the Empire or were within its sphere of influence (Bulgarian Empire, Serbian Empire). The word is a compound ...
'', ''kaisar'' became third in importance, and fourth after
Manuel I Komnenos Manuel I Komnenos (; 28 November 1118 – 24 September 1180), Latinized as Comnenus, also called Porphyrogenitus (; " born in the purple"), was a Byzantine emperor of the 12th century who reigned over a crucial turning point in the history o ...
created the title of '' despot'', which it remained until the end of the Empire. The feminine form was ''kaisarissa''. It remained an office of great importance, usually awarded to imperial relations, as well as a few high-ranking and distinguished officials, and only rarely awarded to foreigners. According to the '' Klētorologion'' of 899, the Byzantine ''caesar''s insignia were a crown without a cross, and the ceremony of a ''caesar''s creation (in this case dating to Constantine V), is included in '' De Ceremoniis'' I.43. The title remained the highest in the imperial hierarchy until the introduction of the '' sebastokratōr'' (a composite derived from '' sebastos'' and '' autokrator'', the Greek equivalents of ''
augustus Gaius Julius Caesar Augustus (born Gaius Octavius; 23 September 63 BC – 19 August AD 14), also known as Octavian (), was the founder of the Roman Empire, who reigned as the first Roman emperor from 27 BC until his death in A ...
'' and '' imperator'') by
Alexios I Komnenos Alexios I Komnenos (, – 15 August 1118), Latinization of names, Latinized as Alexius I Comnenus, was Byzantine Emperor, Byzantine emperor from 1081 to 1118. After usurper, usurping the throne, he was faced with a collapsing empire and ...
(r. 1081–1118) and later of '' despotēs'' by
Manuel I Komnenos Manuel I Komnenos (; 28 November 1118 – 24 September 1180), Latinized as Comnenus, also called Porphyrogenitus (; " born in the purple"), was a Byzantine emperor of the 12th century who reigned over a crucial turning point in the history o ...
(r. 1143–1180). The title remained in existence through the last centuries of the Empire. In the Palaiologan period, it was held by prominent nobles such as
Alexios Strategopoulos Alexios Komnenos Strategopoulos () was a Byzantine aristocrat and general who rose to the rank of ''megas domestikos'' and ''Caesar (title), Caesar''. Distantly related to the Komnenian dynasty, he appears in the sources already at an advanced a ...
, but from the 14th century, it was mostly awarded to rulers of the
Balkans The Balkans ( , ), corresponding partially with the Balkan Peninsula, is a geographical area in southeastern Europe with various geographical and historical definitions. The region takes its name from the Balkan Mountains that stretch throug ...
such as the princes of
Vlachia Vlach ( ), also Wallachian and many other variants, is a term and exonym used from the Middle Ages until the Modern Era to designate speakers of Eastern Romance languages living in Southeast Europe—south of the Danube (the Balkan peninsula) ...
,
Serbia , image_flag = Flag of Serbia.svg , national_motto = , image_coat = Coat of arms of Serbia.svg , national_anthem = () , image_map = , map_caption = Location of Serbia (gree ...
and
Thessaly Thessaly ( ; ; ancient Aeolic Greek#Thessalian, Thessalian: , ) is a traditional geographic regions of Greece, geographic and modern administrative regions of Greece, administrative region of Greece, comprising most of the ancient Thessaly, a ...
. In the late Byzantine hierarchy, as recorded in the mid-14th century ''Book of Offices'' of pseudo-Kodinos, the rank continued to come after the ''sebastokratōr''. Pseudo-Kodinos further records that the ''caesar'' was equal in precedence to the '' panhypersebastos'', another creation of Alexios I, but that Emperor
Michael VIII Palaiologos Michael VIII Palaiologos or Palaeologus (; 1224 – 11 December 1282) reigned as Byzantine emperor from 1261 until his death in 1282, and previously as the co-emperor of the Empire of Nicaea from 1259 to 1261. Michael VIII was the founder of th ...
(r. 1259–1282) had raised his nephew Michael Tarchaneiotes to the rank of '' protovestiarios'' and decreed that to come after the ''caesar''; while under
Andronikos II Palaiologos Andronikos II Palaiologos (; 25 March 1259 – 13 February 1332), Latinization of names, Latinized as Andronicus II Palaeologus, reigned as Byzantine emperor from 1282 to 1328. His reign marked the beginning of the recently restored em ...
(r. 1282–1328) the '' megas domestikos'' was raised to the same eminence, when it was awarded to the future emperor John VI Kantakouzenos (r. 1347–1354). According to pseudo-Kodinos, the ''caesar''s insignia under the Palaiologoi was a ''skiadion'' hat in red and gold, decorated with gold-wire embroideries, with a veil bearing the wearer's name and pendants identical to those of the ''despotēs'' and the ''sebastokratōr''. He wore a red tunic (''rouchon'') similar to the emperor's (without certain decorations), and his shoes and stockings were blue, as were the accouterments of his horse; these were all identical to those of the ''sebastokratōr'', but without the embroidered eagles of the latter. Pseudo-Kodinos writes that the particular forms of another form of hat, the domed ''skaranikon'', and of the mantle, the ''tamparion'', for the ''caesar'' were not known.


Ottoman Empire

"Caesar" is the title officially used by the Sasanid Persians to refer to the Roman and Byzantine emperors. In the
Middle East The Middle East (term originally coined in English language) is a geopolitical region encompassing the Arabian Peninsula, the Levant, Turkey, Egypt, Iran, and Iraq. The term came into widespread usage by the United Kingdom and western Eur ...
, the Persians and the Arabs continued to refer to the Roman and Byzantine emperors as "Caesar" (in ''Qaysar-i Rum'', "Caesar of the Romans", from
Middle Persian Middle Persian, also known by its endonym Pārsīk or Pārsīg ( Inscriptional Pahlavi script: , Manichaean script: , Avestan script: ) in its later form, is a Western Middle Iranian language which became the literary language of the Sasania ...
''kēsar''). Thus, following the conquest of Constantinople in 1453, the victorious
Ottoman sultan The sultans of the Ottoman Empire (), who were all members of the Ottoman dynasty (House of Osman), ruled over the Boundaries between the continents, transcontinental empire from its perceived inception in 1299 to Dissolution of the Ottoman Em ...
Mehmed II Mehmed II (; , ; 30 March 14323 May 1481), commonly known as Mehmed the Conqueror (; ), was twice the sultan of the Ottoman Empire from August 1444 to September 1446 and then later from February 1451 to May 1481. In Mehmed II's first reign, ...
became the first of the rulers of the
Ottoman Empire The Ottoman Empire (), also called the Turkish Empire, was an empire, imperial realm that controlled much of Southeast Europe, West Asia, and North Africa from the 14th to early 20th centuries; it also controlled parts of southeastern Centr ...
to assume the title (in ''Kayser-i Rûm''). After the Fall of Constantinople, having conquered the Byzantine Empire, Mehmed took the title '' Kayser-i Rûm'', claiming succession to the Roman imperium. His claim was that, by possession of the city, he was emperor, a new dynast by conquest, as had been done previously by the likes of
Heraclius Heraclius (; 11 February 641) was Byzantine emperor from 610 to 641. His rise to power began in 608, when he and his father, Heraclius the Elder, the Exarch of Africa, led a revolt against the unpopular emperor Phocas. Heraclius's reign was ...
and Leo III. Contemporary scholar George of Trebizond wrote "the seat of the Roman Empire is Constantinople ... and he who is and remains Emperor of the Romans is also the Emperor of the whole world". Gennadius II, a staunch antagonist of the West because of the Sack of Constantinople committed by the Western Catholics and theological controversies between the two Churches, had been enthroned the Ecumenical Patriarch of Constantinople-New Rome with all the ceremonial elements and
ethnarch Ethnarch (pronounced , also ethnarches, ) is a term that refers generally to political leadership over a common ethnic group or homogeneous kingdom. The word is derived from the Greek language, Greek words (''Ethnic group, ethnos'', "tribe/nation ...
(or ''milletbashi'') status by the Sultan himself in 1454. In turn, Gennadius II formally recognized Mehmed as successor to the throne. Mehmed also had a blood lineage to the Byzantine Imperial family; his predecessor, Sultan
Orhan Orhan Ghazi (; , also spelled Orkhan; died 1362) was the second sultan of the Ottoman Empire from 1323/4 to 1362. He was born in Söğüt, as the son of Osman I. In the early stages of his reign, Orhan focused his energies on conquering mos ...
had married a Byzantine princess, and Mehmed may have claimed descent from John Tzelepes Komnenos. Ottoman sultans were not the only rulers to claim such a title, as there was the
Holy Roman Empire The Holy Roman Empire, also known as the Holy Roman Empire of the German Nation after 1512, was a polity in Central and Western Europe, usually headed by the Holy Roman Emperor. It developed in the Early Middle Ages, and lasted for a millennium ...
in Western Europe, whose emperor, Frederick III, traced his titular lineage from
Charlemagne Charlemagne ( ; 2 April 748 – 28 January 814) was List of Frankish kings, King of the Franks from 768, List of kings of the Lombards, King of the Lombards from 774, and Holy Roman Emperor, Emperor of what is now known as the Carolingian ...
who obtained the title of Roman Emperor when he was crowned by Pope Leo III in 800, although he was never recognized as such by the Byzantine Empire. In diplomatic writings between the Ottomans and Austrians, the Ottoman bureaucracy was angered by their use of the Caesar title when the Ottomans saw themself as the true successors of
Rome Rome (Italian language, Italian and , ) is the capital city and most populated (municipality) of Italy. It is also the administrative centre of the Lazio Regions of Italy, region and of the Metropolitan City of Rome. A special named with 2, ...
. When war broke out and peace negotiations were done, the Austrians (
Holy Roman Empire The Holy Roman Empire, also known as the Holy Roman Empire of the German Nation after 1512, was a polity in Central and Western Europe, usually headed by the Holy Roman Emperor. It developed in the Early Middle Ages, and lasted for a millennium ...
) agreed to give up the use of the Caesar title according to Treaty of Constantinople (1533) (though they would continue to use it and the Roman imperial title until the collapse of the Holy Roman Empire in 1806). The Russians, who defined
Moscow Moscow is the Capital city, capital and List of cities and towns in Russia by population, largest city of Russia, standing on the Moskva (river), Moskva River in Central Russia. It has a population estimated at over 13 million residents with ...
as the Third Rome, were similarly sanctioned by the Ottomans, who ordered the
Crimean Khanate The Crimean Khanate, self-defined as the Throne of Crimea and Desht-i Kipchak, and in old European historiography and geography known as Little Tartary, was a Crimean Tatars, Crimean Tatar state existing from 1441 to 1783, the longest-lived of th ...
to raid Russia on numerous occasions. The Ottomans stopped claiming political superiority over the Holy Roman Empire with the Treaty of Zsitvatorok in 1606, and over the
Russian Empire The Russian Empire was an empire that spanned most of northern Eurasia from its establishment in November 1721 until the proclamation of the Russian Republic in September 1917. At its height in the late 19th century, it covered about , roughl ...
with the Treaty of Küçük Kaynarca in 1774, by diplomatically recognising the monarchs of these two countries as equals to the Ottoman Sultan for the first time.


List of holders

Note: ''Caesars'' who later became ''Augusti'' and thus emperors are highlighted in bold. ;Byzantine nobles * Tervel, khan of the
Bulgars The Bulgars (also Bulghars, Bulgari, Bolgars, Bolghars, Bolgari, Proto-Bulgarians) were Turkic peoples, Turkic Nomad, semi-nomadic warrior tribes that flourished in the Pontic–Caspian steppe and the Volga region between the 5th and 7th centu ...
, named in 705 by Justinian II * Nikephoros &
Christopher Christopher is the English language, English version of a Europe-wide name derived from the Greek language, Greek name Χριστόφορος (''Christophoros'' or ''Christoforos''). The constituent parts are Χριστός (''Christós''), "Jesus ...
, named on 2 April 769 by their father Constantine V * Alexios Mosele, likely named in 831 by his father-in-law Theophilos * Bardas, named on 22 April 862 by his nephew
Michael III Michael III (; 9/10 January 840 – 24 September 867), also known as Michael the Drunkard, was Byzantine emperor from 842 to 867. Michael III was the third and traditionally last member of the Amorian dynasty, Amorian (or Phrygian) dynasty. He ...
*
Romanos I Lekapenos Romanos I Lakapenos or Lekapenos (; 870 – 15 June 948), Latinisation of names, Latinized as Romanus I Lacapenus or Romanus I Lecapenus, was Byzantine emperor from 920 until his deposition in 944, serving as regent for and senior co-ruler of ...
, named on 24 September 920 by the Byzantine senate * Bardas Phokas, named in late 963 by his son Nikephoros II * Romanos III Argyros, named on 9 November 1028 by his father-in-law Constantine VIII * Nikephoros Bryennios the Younger, named by his father-in-law Alexios I * John Doukas, named in 1074 by his brother Constantine X * George II of Georgia, named in 1081 by his brother-in-law Nikephoros III * Nikephoros Melissenos, named in 1080 by Alexios I * Isaac Komnenos, named in 1104 by his father Alexios I * John Rogerios Dalassenos, named 1130 by his father-in-law John II * Renier of Montferrat, named in 1180 by his father-in-law Manuel I * John Kantakouzenos, named in 1186 by Isaac II *
Conrad of Montferrat Conrad of Montferrat (Italian language, Italian: ''Corrado del Monferrato''; Piedmontese language, Piedmontese: ''Conrà ëd Monfrà'') (c. 1146 – 28 April 1192) was a nobleman, one of the major participants in the Third Crusade. He was the '' ...
, named in 1187 by his father-in-law Isaac II * Manuel Maurozomes, named 1200 by Alexios III * Leo Gabalas, named by Theodore I Laskaris (r. 1205–1221) *
Constantine Palaiologos Constantine XI Dragases Palaiologos or Dragaš Palaeologus (; 8 February 140429 May 1453) was the last reigning List of Byzantine emperors, Byzantine emperor from 23 January 1449 until his death in battle at the fall of Constantinople on 29 M ...
, named in 1259 by his brother
Michael VIII Michael VIII Palaiologos or Palaeologus (; 1224 – 11 December 1282) reigned as Byzantine emperor from 1261 until his death in 1282, and previously as the co-emperor of the Empire of Nicaea from 1259 to 1261. Michael VIII was the founder of th ...
*
Alexios Strategopoulos Alexios Komnenos Strategopoulos () was a Byzantine aristocrat and general who rose to the rank of ''megas domestikos'' and ''Caesar (title), Caesar''. Distantly related to the Komnenian dynasty, he appears in the sources already at an advanced a ...
, named in 1259 by Michael VIII *
Roger de Flor Roger de Flor (c. 1267 – 30 April 1305), also known as Ruggero/Ruggiero da Fiore or Rutger von Blum or Ruggero Flores, was an Italian military adventurer and condottiere active in Aragonese Sicily, Italy, and the Byzantine Empire. He was ...
, leader of the Catalan Company, named in 1304 by Andronikos II * John Palaiologos, named in 1326 by his uncle Andronikos II * Hrelja, likely named by John VI Kantakouzenos (r. 1347–1354) ;Serbian rulers * Alexios Angelos Philanthropenos, named in 1373 by despot
Thomas Preljubović Thomas Preljubović (; ) was Despot of Epirus, ruler of the Despotate of Epirus in Ioannina from 1367 to his death in 1384. Thomas was an unpopular ruler and is appraised very negatively by his contemporaries. On December 23, 1384 he was stabbed to ...
* Manuel Angelos Philanthropenos, named in 1390 by despot Esau de' Buondelmonti * Grgur Golubić, named in 1347 by Stefan Uroš IV Dušan * Vojihna, named in 1347 by Uroš IV * Preljub, named in 1348–49 by Uroš IV * Uglješa Vlatković, named by Uroš V * Nikola Radonja, named by Uroš V * Novak, named by Uroš V ;Ottoman rulers *
Mehmed II Mehmed II (; , ; 30 March 14323 May 1481), commonly known as Mehmed the Conqueror (; ), was twice the sultan of the Ottoman Empire from August 1444 to September 1446 and then later from February 1451 to May 1481. In Mehmed II's first reign, ...
(r. 1451–1481) assumed title '' kayser-i Rûm'' following the conquest of Constantinople in 1452 * Bayezid II (r. 1481–1512) is addressed as ''kayser'' in contemporary sources * Suleiman I (r. 1520–1566) called himself "Caesar of Rome" in the inscription of
Bender, Moldova Bender (, ) or Bendery (, ; ), also known as Tighina ( mo-Cyrl, Тигина, links=no), is a city within the internationally recognized borders of Moldova under ''de facto'' control of the unrecognized Transnistria, Pridnestrovian Moldavian Rep ...
, dating from . In one of his poems, he also called himself "Roman caesar". **See
List of sultans of the Ottoman Empire The sultans of the Ottoman Empire (), who were all members of the Ottoman dynasty (House of Osman), ruled over the transcontinental empire from its perceived inception in 1299 to its dissolution in 1922. At its height, the Ottoman Empire s ...
; the title ''kayser'' continued to be used as late as the 18th century.


See also

*
Augustus (title) ''Augustus'' (plural ''Augusti''; , ; "majestic", "great" or "venerable") was the main title of the Roman emperors during Classical antiquity, Antiquity. It was given as both name and title to Augustus, Gaius Julius Caesar Octavianus (often ref ...
* Imperator (title)


Notes


References


Bibliography

* * * * * * * * *


Further reading

* * Krebs, C. B. (2023),
It's Caesar [Kaiser/Tsar
/nowiki>, Not Mr. King.' (Mis)understanding a Caesarian Pun (Suet. ''Iul.'' 79.2) and Its Ironies">aiser/Tsar">It's Caesar [Kaiser/Tsar
/nowiki>, Not Mr. King.' (Mis)understanding a Caesarian Pun (Suet. ''Iul.'' 79.2) and Its Ironies" in ''Histos'' 17: 43-51. {{Byzantine offices after pseudo-Kodinos Ancient Roman titles Titles of national or ethnic leadership Byzantine court titles Imperial titles