__NOTOC__ Year 306 ( CCCVI) was a

common year starting on Tuesday A common year starting on Tuesday is any non-leap year (i.e. a year with 365 days) that begins on Tuesday, 1 January, and ends on Tuesday, 31 December. Its dominical letter hence is F. The most recent year of such kind was 2019, and the next one wi ...

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 ...

. At the time, it was known as the Year of the Consulship of Constantius and Valerius (or, less frequently, year 1059 ''

Ab urbe condita ''Ab urbe condita'' (; 'from the founding of Rome, founding of the City'), or (; 'in the year since the city's founding'), abbreviated as AUC or AVC, expresses a date in years since 753 BC, 753 BC, the traditional founding of Rome. It is ...

''). The denomination 306 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

Roman Empire

July 25 Events Pre-1600 * 306 – Constantine I is proclaimed Roman emperor by his troops. * 315 – The Arch of Constantine is completed near the Colosseum in Rome to commemorate Constantine I's victory over Maxentius at the Milvian Bridg ...

–

Constantius I Flavius Valerius Constantius ( – 25 July 306), also called Constantius I, was a Roman emperor from 305 to 306. He was one of the four original members of the Tetrarchy established by Diocletian, first serving as ''caesar'' from 293 to 3 ...

dies outside

Eboracum Eboracum () was a castra, fort and later a coloniae, city in the Roman province of Roman Britain, Britannia. In its prime it was the largest town in northern Britain and a provincial capital. The site remained occupied after the decline of the ...

(modern-day

York York is a cathedral city in North Yorkshire, England, with Roman Britain, Roman origins, sited at the confluence of the rivers River Ouse, Yorkshire, Ouse and River Foss, Foss. It has many historic buildings and other structures, such as a Yor ...

). Constantine, aged 23 or 24, is declared emperor by his troops. Emperor

Galerius Galerius Valerius Maximianus (; Greek: Γαλέριος; 258 – May 311) was Roman emperor from 305 to 311. He participated in the system of government later known as the Tetrarchy, first acting as '' caesar'' under Emperor Diocletian. In th ...

grants Constantine the title of

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 a civil war. He ...

, and elevates

Flavius Valerius Severus Flavius Valerius Severus (died September 307), enumerated as Severus II, was a Roman emperor from 306 to 307, and a member of the Tetrarchy. He shared control of the western half of the empire with Constantine I, but spent most of his short re ...

to emperor in the Western part of the Roman Empire.''Consularia Constantinopolitana'' 306, in ''

Monumenta Germaniae Historica The (Latin for "Historical Monuments of Germany"), frequently abbreviated MGH, is a comprehensive series of carefully edited and published primary sources, both chronicle and archival, for the study of parts of Northwestern, Central and Souther ...

'' ant. 11: '' Chronica Minora'' Vol. 1 (

Theodor Mommsen Christian Matthias Theodor Mommsen (; ; 30 November 1817 – 1 November 1903) was a German classical scholar, historian, jurist, journalist, politician and archaeologist. He is widely regarded as one of the greatest classicists of the 19th ce ...

ed., 1892) p. 231. * Constantine institutes toleration of the

Christians A Christian () is a person who follows or adheres to Christianity, a monotheistic Abrahamic religion based on the life and teachings of Jesus Christ. Christians form the largest religious community in the world. The words '' Christ'' and ''C ...

in his territories. * Constantine establishes his capital in

Augusta Treverorum Augusta Treverorum (Latin for "City of Augustus in the Land of the Treveri") was a Ancient Rome, Roman city on the Moselle River, from which modern Trier emerged. The date of the city's founding is placed between the construction of the first Rom ...

(

Trier Trier ( , ; ), formerly and traditionally known in English as Trèves ( , ) and Triers (see also Names of Trier in different languages, names in other languages), is a city on the banks of the Moselle (river), Moselle in Germany. It lies in a v ...

). He begins a major expansion of the city, strengthening the

walls Walls may refer to: *The plural of wall, a structure * Walls (surname), a list of notable people with the surname Places * Walls, Louisiana, United States * Walls, Mississippi, United States *Walls, Ontario Perry is a township (Canada), ...

, expanding the palace complex and building the Imperial Baths. * Building on the efforts of

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 ...

, Galerius introduces the poll tax to central and southern Italy and truncates the size of the

Praetorian Guard The Praetorian Guard (Latin language, Latin: ''cohortes praetoriae'') was the imperial guard of the Imperial Roman army that served various roles for the Roman emperor including being a bodyguard unit, counterintelligence, crowd control and ga ...

, with plans to disband the Guard altogether. *

October 28 Events Pre-1600 * 97 – Roman emperor Nerva is forced by the Praetorian Guard to adopt general Marcus Ulpius Trajanus as his heir and successor. * 306 – Maxentius is proclaimed Roman emperor. * 312 – Constantine I defeat ...

–

Maxentius Marcus Aurelius Valerius Maxentius ( 283 – 28 October 312) was a Roman emperor from 306 until his death in 312. Despite ruling in Italy and North Africa, and having the recognition of the Senate in Rome, he was not recognized as a legitimate ...

, son of former Western Emperor

Maximian Maximian (; ), nicknamed Herculius, was Roman emperor from 286 to 305. He was ''Caesar (title), Caesar'' from 285 to 286, then ''Augustus (title), Augustus'' from 286 to 305. He shared the latter title with his co-emperor and superior, Diocleti ...

, leads a revolt by the

and members of 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 ...

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 is proclaimed Emperor.

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 ...

supports Maxentius, as do

Africa Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surfac ...

Corsica Corsica ( , , ; ; ) is an island in the Mediterranean Sea and one of the Regions of France, 18 regions of France. It is the List of islands in the Mediterranean#By area, fourth-largest island in the Mediterranean and lies southeast of the Metro ...

Sardinia Sardinia ( ; ; ) is the Mediterranean islands#By area, second-largest island in the Mediterranean Sea, after Sicily, and one of the Regions of Italy, twenty regions of Italy. It is located west of the Italian Peninsula, north of Tunisia an ...

and

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. ...

. Maxentius recalls Maximian from retirement, who joins his son in Rome. * Winter: Constantine fights with success against 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 ...

. * Galerius has the Rotunda of Galerius built in

Thessaloniki Thessaloniki (; ), also known as Thessalonica (), Saloniki, Salonika, or Salonica (), is the second-largest city in Greece (with slightly over one million inhabitants in its Thessaloniki metropolitan area, metropolitan area) and the capital cit ...

(

Macedonia Macedonia (, , , ), most commonly refers to: * North Macedonia, a country in southeastern Europe, known until 2019 as the Republic of Macedonia * Macedonia (ancient kingdom), a kingdom in Greek antiquity * Macedonia (Greece), a former administr ...

Asia

* The

War of the Eight Princes The War of the Eight Princes, Rebellion of the Eight Kings, or Rebellion of the Eight Princes ( zh, t=八王之亂, s=八王之乱, p=bā wáng zhī luàn, w=pa wang chih luan) was a series of coups and civil wars among kings/princes (Chinese: '' ...

ends in

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

By topic

Religion

* The

Synod of Elvira The Synod of Elvira (, ) was an ecclesiastical synod held at Elvira in the Roman province of Hispania Baetica, now Granada in southern Spain.. Its date has not been exactly determined but is believed to be in the first quarter of the fourth centu ...

concludes with the issue of various

canon Canon or Canons may refer to: Arts and entertainment * Canon (fiction), the material accepted as officially written by an author or an ascribed author * Literary canon, an accepted body of works considered as high culture ** Western canon, th ...

s, including one declaring that killing through a magic spell is a sin and the work of the devil. * Metrophanes becomes bishop of Byzantium. * The

Patriarchate of Lisbon The Metropolitan Patriarchate of Lisbon () is a Latin Church ecclesiastical territory or patriarchal archdiocese of the Catholic Church in Lisbon, the capital of Portugal. Its archiepiscopal see is the Patriarchal Cathedral of St. Mary Major, ...

is established. * Christianity is established in

Roman Britain Roman Britain was the territory that became the Roman province of ''Britannia'' after the Roman conquest of Britain, consisting of a large part of the island of Great Britain. The occupation lasted from AD 43 to AD 410. Julius Caes ...

. British bishops participate in the councils of

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 ...

(

314 __NOTOC__ Year 314 ( CCCXIV) was a common year starting on Friday of the Julian calendar. At the time, it was known as the Year of the Consulship of Rufius and Annianus (or, less frequently, year 1067 ''Ab urbe condita''). The denomination 314 ...

Nicaea Nicaea (also spelled Nicæa or Nicea, ; ), also known as Nikaia (, Attic: , Koine: ), was an ancient Greek city in the north-western Anatolian region of Bithynia. It was the site of the First and Second Councils of Nicaea (the first and seve ...

( 325) and Arminum (

349 __NOTOC__ Year 349 (Roman numerals, CCCXLIX) was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Limenius and Catullinus (or, less frequently, year 1102 ''Ab urbe condita''). T ...

Births

Ephrem the Syrian Ephrem the Syrian (; ), also known as Ephraem the Deacon, Ephrem of Edessa or Aprem of Nisibis, (Syriac: ܡܪܝ ܐܦܪܝܡ ܣܘܪܝܝܐ — ''Mâr Aphrêm Sûryâyâ)'' was a prominent Christian theology, Christian theologian and Christian literat ...

, Syriac theologian and hymnodist (d.

373 __NOTOC__ Year 373 ( CCCLXXIII) was a common year starting on Tuesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Valens (or, less frequently, year 1126 ''Ab urbe condita''). The denomination ...

)

Deaths

February 17 Events Pre-1600 * 1370 – Northern Crusades: Grand Duchy of Lithuania and the Teutonic Knights meet in the Battle of Rudau. * 1411 – Following the successful campaigns during the Ottoman Interregnum, Musa Çelebi, one of the sons ...

–

Theodore of Amasea : ''For another Saint Theodore, see: Theodore Stratelates or Saint Theodore (disambiguation)''. Saint Theodore (Άγιος Θεοδώρος), distinguished as Theodore of Amasea, Theodore the Recruit (Θεοδώρος ό Τήρων), and by o ...

, Roman soldier and

martyr A martyr (, ''mártys'', 'witness' Word stem, stem , ''martyr-'') is someone who suffers persecution and death for advocating, renouncing, or refusing to renounce or advocate, a religious belief or other cause as demanded by an external party. In ...

March 4 Events Pre-1600 * AD 51 – Nero, later to become Roman emperor, is given the title '' princeps iuventutis'' (head of the youth). * 306 – Martyrdom of Saint Adrian of Nicomedia. * 581 – Yang Jian declares himself Emperor ...

–

Adrian and Natalia of Nicomedia Adrian of Nicomedia (also known as Hadrian) or Saint Adrian (, died 4 March 306) was a Herculian Guard of the Roman Emperor Galerius. After becoming a convert to Christianity with his wife Natalia (Ναταλία), Adrian was martyred at Nicome ...

, Christian martyrs *

–

Constantius Chlorus Flavius Valerius Constantius ( – 25 July 306), also called Constantius I, was a Roman emperor from 305 to 306. He was one of the four original members of the Tetrarchy established by Diocletian, first serving as Caesar (title), ''caesar'' ...

, Roman emperor (b. c.

250 __NOTOC__ Year 250 (Roman numerals, CCL) was a common year starting on Tuesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Traianus and Gratus (or, less frequently, year 1003 ''Ab urbe condita''). The den ...

) *

August 25 Events Pre-1600 * 766 – Emperor Constantine V humiliates nineteen high-ranking officials, after discovering a plot against him. He executes the leaders, Constantine Podopagouros and his brother Strategios. * 1248 – The Dutch cit ...

– Maginus, Christian hermit and martyr *

Demetrius of Thessaloniki Saint Demetrius (or Demetrios) of Thessaloniki, Thessalonica (, ), also known as the Holy Great martyr, Great-Martyr Demetrius the Myroblyte (meaning 'the Myrrh-Gusher' or 'Myrrh-Streamer'; 3rd century – 306), was a Greeks, Greek Christianity, ...

, Roman soldier and martyr *

Sima Ying Sima Ying (司馬穎) (279 – December 306), courtesy name Zhangdu (章度), was a Jin dynasty imperial prince who served briefly as his half-brother Emperor Hui of Jin's regent and crown prince. He was the sixth of eight princes commonly assoc ...

, Chinese prince of the

Jin Dynasty Jin may refer to: States Jìn 晉 * Jin (Chinese state) (晉國), major state of the Zhou dynasty, existing from the 11th century BC to 376 BC * Jin dynasty (266–420) (晉朝), also known as Liang Jin and Sima Jin * Jin (Later Tang precursor) ...

(b.

279 __NOTOC__ Year 279 ( CCLXXIX) was a common year starting on Wednesday of the Julian calendar. At the time, it was known in Rome as the Year of the Consulship of Probus and Paternus (or, less frequently, year 1032 ''Ab urbe condita''). The den ...

) * Sima Yong (or Wenzai), Chinese prince and

regent In a monarchy, a regent () is a person appointed to govern a state because the actual monarch is a minor, absent, incapacitated or unable to discharge their powers and duties, or the throne is vacant and a new monarch has not yet been dete ...

References

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