__NOTOC__ Year 542 ( DXLII) was a

common year starting on Wednesday A common year starting on Wednesday is any non-leap year (a year with 365 days) that begins on Wednesday, January 1, and ends on Wednesday, December 31. Its dominical letter hence is E. The current year, 2025, is a common year starting on Wedne ...

of the

Julian calendar The Julian calendar is a solar calendar of 365 days in every year with an additional leap day every fourth year (without exception). The Julian calendar is still used as a religious calendar in parts of the Eastern Orthodox Church and in parts ...

. From this year forward, the appointment of particular Roman consuls was abandoned and the office was merged with that of Byzantine emperor. Thus, the consular year dating was abandoned in practice, even though it formally remained until the end of the 9th century. The denomination 542 for this year has been used since the early medieval period, when the

Anno Domini The terms (AD) and before Christ (BC) are used when designating years in the Gregorian calendar, Gregorian and Julian calendar, Julian calendars. The term is Medieval Latin and means "in the year of the Lord" but is often presented using "o ...

calendar era A calendar era is the period of time elapsed since one '' epoch'' of a calendar and, if it exists, before the next one. For example, the current year is numbered in the Gregorian calendar, which numbers its years in the Western Christian era ...

became the prevalent method in Europe for naming years.

Events

By place

Byzantine Empire

Plague of Justinian The plague of Justinian or Justinianic plague (AD 541–549) was an epidemic of Plague (disease), plague that afflicted the entire Mediterranean basin, Mediterranean Basin, Europe, and the Near East, especially the Sasanian Empire and the Byza ...

Bubonic plague Bubonic plague is one of three types of Plague (disease), plague caused by the Bacteria, bacterium ''Yersinia pestis''. One to seven days after exposure to the bacteria, flu-like symptoms develop. These symptoms include fever, headaches, and ...

, spread from

Egypt Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northe ...

, kills at least 230,000 in

Constantinople Constantinople (#Names of Constantinople, see other names) was a historical city located on the Bosporus that served as the capital of the Roman Empire, Roman, Byzantine Empire, Byzantine, Latin Empire, Latin, and Ottoman Empire, Ottoman empire ...

(modern Istanbul; before counting stops), and perhaps two million or more in the rest of the empire. Emperor

Justinian I Justinian I (, ; 48214 November 565), also known as Justinian the Great, was Roman emperor from 527 to 565. His reign was marked by the ambitious but only partly realized ''renovatio imperii'', or "restoration of the Empire". This ambition was ...

contracts the disease but recovers. *

Lazic War The Lazic War, also known as the Colchidian War or in Georgian historiography as the Great War of Egrisi, was fought between the Byzantine Empire and the Sasanian Empire for control of the ancient Georgia (country), Georgian region of Lazica. The ...

– Justinian I sends a Byzantine army (30,000 men) to

Armenia Armenia, officially the Republic of Armenia, is a landlocked country in the Armenian Highlands of West Asia. It is a part of the Caucasus region and is bordered by Turkey to the west, Georgia (country), Georgia to the north and Azerbaijan to ...

. The

Persians Persians ( ), or the Persian people (), are an Iranian ethnic group from West Asia that came from an earlier group called the Proto-Iranians, which likely split from the Indo-Iranians in 1800 BCE from either Afghanistan or Central Asia. They ...

, severely outnumbered, are forced to retreat, but at Dvin the Byzantines are defeated by a force of 4,000 men in an

ambush An ambush is a surprise attack carried out by people lying in wait in a concealed position. The concealed position itself or the concealed person(s) may also be called an "". Ambushes as a basic military tactics, fighting tactic of soldi ...

, and are completely routed. *The 542 Sea of Marmara earthquake takes place in the winter of 542, in the vicinity of the

Sea of Marmara The Sea of Marmara, also known as the Sea of Marmora or the Marmara Sea, is a small inland sea entirely within the borders of Turkey. It links the Black Sea and the Aegean Sea via the Bosporus and Dardanelles straits, separating Turkey's E ...

. It also affects the coasts of

Thrace Thrace (, ; ; ; ) is a geographical and historical region in Southeast Europe roughly corresponding to the province of Thrace in the Roman Empire. Bounded by the Balkan Mountains to the north, the Aegean Sea to the south, and the Black Se ...

and the

Edremit Gulf The Edremit gulf is an Aegean gulf in Turkey's Balıkesir Province. It is named after Edremit, a district of Balıkesir Province which is situated close to the tip of the gulf. Biga Peninsula is to the north. The southern coast belongs to the ...

Europe

* Spring – Battle of Faventia: King

Totila Totila, original name Baduila (died 1 July 552), was the penultimate King of the Ostrogoths, reigning from 541 to 552 AD. A skilled military and political leader, Totila reversed the tide of the Gothic War (535–554), Gothic War, recovering b ...

scatters the

Byzantine 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 the events that caused the fall of the Western Roman E ...

forces near Faventia (modern

Faenza Faenza (, ; ; or ; ) is an Italian city and comune of 59,063 inhabitants in the province of Ravenna, Emilia-Romagna, situated southeast of Bologna. Faenza is home to a historical manufacture of majolica-ware glazed earthenware pottery, known ...

) with 5,000 men, beginning the resurgence of Gothic resistance to the reconquest of Italy. *

Battle of Mucellium The Battle of Mucellium was an engagement in 542 near Mugello, Italy, between Ostrogoths and Byzantines during the Gothic War. Having lifted a siege of Florence, the Ostrogoths led by Totila turned on the pursuing Byzantines, defeating their ...

: Totila marches down into

Tuscany Tuscany ( ; ) is a Regions of Italy, region in central Italy with an area of about and a population of 3,660,834 inhabitants as of 2025. The capital city is Florence. Tuscany is known for its landscapes, history, artistic legacy, and its in ...

and defeats the Byzantines at

Florence Florence ( ; ) is the capital city of the Italy, Italian region of Tuscany. It is also the most populated city in Tuscany, with 362,353 inhabitants, and 989,460 in Metropolitan City of Florence, its metropolitan province as of 2025. Florence ...

, in the valley of Mugello. He treats his prisoners well, and many are induced to join his

banner A banner can be a flag or another piece of cloth bearing a symbol, logo, slogan or another message. A flag whose design is the same as the shield in a coat of arms (but usually in a square or rectangular shape) is called a banner of arms. Also, ...

. *

March March is the third month of the year in both the Julian and Gregorian calendars. Its length is 31 days. In the Northern Hemisphere, the meteorological beginning of spring occurs on the first day of March. The March equinox on the 20 or 2 ...

– Totila bypasses

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, ...

and begins his expedition in

Southern Italy Southern Italy (, , or , ; ; ), also known as () or (; ; ; ), is a macroregion of Italy consisting of its southern Regions of Italy, regions. The term "" today mostly refers to the regions that are associated with the people, lands or cultu ...

.J.B. Bury, 1923. ''History of the later Roman Empire'', chapter XIX He captures Beneventum and receives the submission of the provinces of

Apulia Apulia ( ), also known by its Italian language, Italian name Puglia (), is a Regions of Italy, region of Italy, located in the Southern Italy, southern peninsular section of the country, bordering the Adriatic Sea to the east, the Strait of Ot ...

Lucania Lucania was a historical region of Southern Italy, corresponding to the modern-day region of Basilicata. It was the land of the Lucani, an Oscan people. It extended from the Tyrrhenian Sea to the Gulf of Taranto. It bordered with Samnium and ...

and

Bruttium 01 or 01 may refer to: * The year 2001, or any year ending with 01 * The month of January * 1 (number) Music * ''01'' (Richard Müller album), 2001 * ''01'' (Urban Zakapa album), 2011 * ''01011001'', the seventh studio album from Arjen Anthony L ...

. * Siege of Naples: Totila

besiege A siege () . is a military blockade of a city, or fortress, with the intent of conquering by attrition, or by well-prepared assault. Siege warfare (also called siegecrafts or poliorcetics) is a form of constant, low-intensity conflict characte ...

s the city of

Naples Naples ( ; ; ) is the Regions of Italy, regional capital of Campania and the third-largest city of Italy, after Rome and Milan, with a population of 908,082 within the city's administrative limits as of 2025, while its Metropolitan City of N ...

Campania Campania is an administrative Regions of Italy, region of Italy located in Southern Italy; most of it is in the south-western portion of the Italian Peninsula (with the Tyrrhenian Sea to its west), but it also includes the small Phlegraean Islan ...

. A Byzantine relief force from

Sicily Sicily (Italian language, Italian and ), officially the Sicilian Region (), is an island in the central Mediterranean Sea, south of the Italian Peninsula in continental Europe and is one of the 20 regions of Italy, regions of Italy. With 4. ...

is intercepted and almost destroyed by Gothic

warship A warship or combatant ship is a naval ship that is used for naval warfare. Usually they belong to the navy branch of the armed forces of a nation, though they have also been operated by individuals, cooperatives and corporations. As well as b ...

s. * King

Childebert I Childebert I ( 496 – 13 December 558) was a Frankish King of the Merovingian dynasty, as third of the four sons of Clovis I who shared the kingdom of the Franks upon their father's death in 511. He was one of the sons of Saint Clo ...

and his brother

Chlothar I Chlothar I, sometime called "the Old" (French: le Vieux), (died December 561) also anglicised as Clotaire from the original French version, was a king of the Franks of the Merovingian dynasty and one of the four sons of Clovis I. With his eldes ...

invade

Visigothic Spain The Visigothic Kingdom, Visigothic Spain or Kingdom of the Goths () was a Barbarian kingdoms, barbarian kingdom that occupied what is now southwestern France and the Iberian Peninsula from the 5th to the 8th centuries. One of the Germanic people ...

. They capture

Pamplona Pamplona (; ), historically also known as Pampeluna in English, is the capital city of the Navarre, Chartered Community of Navarre, in Spain. Lying at near above sea level, the city (and the wider Cuenca de Pamplona) is located on the flood pl ...

, but

Zaragoza Zaragoza (), traditionally known in English as Saragossa ( ), is the capital city of the province of Zaragoza and of the autonomous communities of Spain, autonomous community of Aragon, Spain. It lies by the Ebro river and its tributaries, the ...

withstands a siege and the

Franks file:Frankish arms.JPG, Aristocratic Frankish burial items from the Merovingian dynasty The Franks ( or ; ; ) were originally a group of Germanic peoples who lived near the Rhine river, Rhine-river military border of Germania Inferior, which wa ...

retreat to

Gaul Gaul () was a region of Western Europe first clearly described by the Roman people, Romans, encompassing present-day France, Belgium, Luxembourg, and parts of Switzerland, the Netherlands, Germany, and Northern Italy. It covered an area of . Ac ...

. From this expedition Childebert brings back to

Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...

relic In religion, a relic is an object or article of religious significance from the past. It usually consists of the physical remains or personal effects of a saint or other person preserved for the purpose of veneration as a tangible memorial. Reli ...

, the

tunic A tunic is a garment for the torso, usually simple in style, reaching from the shoulders to a length somewhere between the hips and the ankles. It might have arm-sleeves, either short or full-length. Most forms have no fastenings. The name deri ...

of Saint Vincent.

By topic

Religion

* Brendan establishes a monastic settlement on

Eileach an Naoimh Eileach an Naoimh is an uninhabited island in the Inner Hebrides of the west coast of Scotland. It is the second largest and southernmost of the Garvellachs archipelago and lies in the Firth of Lorn between Isle of Mull, Mull and Argyll. The nam ...

(approximate date).

Literature

Gildas Gildas (English pronunciation: , Breton language, Breton: ''Gweltaz''; ) — also known as Gildas Badonicus, Gildas fab Caw (in Middle Welsh texts and antiquarian works) and ''Gildas Sapiens'' (Gildas the Wise) — was a 6th-century Britons (h ...

, British

monk A monk (; from , ''monachos'', "single, solitary" via Latin ) is a man who is a member of a religious order and lives in a monastery. A monk usually lives his life in prayer and contemplation. The concept is ancient and can be seen in many reli ...

, writes his work ''"

De Excidio et Conquestu Britanniae (English: ''On the Ruin and Conquest of Britain'') is a work written in Anglo-Latin literature, Latin in the late fifth or sixth century by the Britons (historical), British religious polemicist Gildas. It is a sermon in three parts condemnin ...

"'' (approximate date).

Births

* Su Wei, high official of the

Sui dynasty The Sui dynasty ( ) was a short-lived Dynasties of China, Chinese imperial dynasty that ruled from 581 to 618. The re-unification of China proper under the Sui brought the Northern and Southern dynasties era to a close, ending a prolonged peri ...

(d. 623) * Xiao Min Di, emperor of

Northern Zhou Zhou (), known in historiography as the Northern Zhou (), was a Xianbei-led Dynasties in Chinese history, dynasty of China that lasted from 557 to 581. One of the Northern and Southern dynasties#Northern dynasties, Northern dynasties of China's ...

(d.

557 __NOTOC__ Year 557 ( DLVII) was a common year starting on Monday of the Julian calendar. The denomination 557 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe f ...

) * Xiao Ming Di, emperor of the

Liang dynasty The Liang dynasty (), alternatively known as the Southern Liang () or Xiao Liang () in historiography, was an imperial dynasty of China and the third of the four Southern dynasties during the Northern and Southern dynasties period. It was pre ...

(d. 585)

Deaths

August 27 Events Pre-1600 * 410 – The sacking of Rome by the Visigoths ends after three days. * 1172 – Henry the Young King and Margaret of France are crowned junior king and queen of England. * 1232 – Shikken Hojo Yasutoki of the ...

– Caesarius,

bishop A bishop is an ordained member of the clergy who is entrusted with a position of Episcopal polity, authority and oversight in a religious institution. In Christianity, bishops are normally responsible for the governance and administration of di ...

Arles Arles ( , , ; ; Classical ) is a coastal city and Communes of France, commune in the South of France, a Subprefectures in France, subprefecture in the Bouches-du-Rhône Departments of France, department of the Provence-Alpes-Côte d'Azur Reg ...

* Eógan Bél, king of

Connacht Connacht or Connaught ( ; or ), is the smallest of the four provinces of Ireland, situated in the west of Ireland. Until the ninth century it consisted of several independent major Gaelic kingdoms (Uí Fiachrach, Uí Briúin, Uí Maine, C ...

(

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 ...

)

References

{{DEFAULTSORT:542