__NOTOC__ Year 266 ( CCLXVI) was a

common year starting on Monday A common year starting on Monday is any non-leap year (i.e., a year with 365 days) that begins on Monday, 1 January, and ends on Monday, 31 December. Its dominical letter hence is G. The most recent year of such kind was 2018 and the next one wi ...

(link will display the full calendar) of the

Julian calendar The Julian calendar, proposed by Roman consul Julius Caesar in 46 BC, was a reform of the Roman calendar. It took effect on , by edict. It was designed with the aid of Greek mathematics, Greek mathematicians and Ancient Greek astronomy, as ...

. At the time, it was known as the Year of the Consulship of Gallienus and Sabinillus (or, less frequently, year 1019 ''

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

''). The denomination 266 for this year has been used since the early medieval period, when the

Anno Domini The terms (AD) and before Christ (BC) are used to label or number years in the Julian and Gregorian calendars. The term is Medieval Latin and means 'in the year of the Lord', but is often presented using "our Lord" instead of "the Lord", ...

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, it is the year as per the Gregorian calendar, which numbers its years in the Western Christian era (the Copt ...

became the prevalent method in Europe for naming years.

Events

By place

Roman Empire

* King

Odaenathus Septimius Odaenathus (Palmyrene Aramaic: , , vocalized as ; ar, أذينة, translit=Uḏaina; 220 – 267) was the founder king ( ''Mlk'') of the Palmyrene Kingdom who ruled from Palmyra, Syria. He elevated the status of his kingdom from a re ...

Palmyra Palmyra (; Palmyrene: () ''Tadmor''; ar, تَدْمُر ''Tadmur'') is an ancient city in present-day Homs Governorate, Syria. Archaeological finds date back to the Neolithic period, and documents first mention the city in the early seco ...

invades

Persia Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkme ...

to conquer the capital, Ctesiphon, and twice comes as far as the walls of the Persian capital, but fails to take it. After his victories in the East, he pronounces himself with the title "king of kings". * A powerful tropical volcanic eruption around this year brings a below-average flood of the Nile next year.Climate change in antiquity: Mass emigration due to water scarcity
sciencedaily.com January 25, 2021

Ireland

* The rule of High King

Cormac mac Airt Cormac mac Airt, also known as Cormac ua Cuinn (grandson of Conn) or Cormac Ulfada (long beard), was, according to medieval Irish legend and historical tradition, a High King of Ireland. He is probably the most famous of the ancient High King ...

ends (approximate date).

Asia

February 4 Events Pre–1600 * 211 – Following the death of the Roman Emperor Septimius Severus at Eboracum (modern York, England) while preparing to lead a campaign against the Caledonians, the empire is left in the control of his two quarrelling ...

– Sima Yan, regent of the Chinese state of

Cao Wei Wei (Hanzi: 魏; pinyin: ''Wèi'' < Middle Chinese: *''ŋjwei^C'' <

, forces the last Cao Wei emperor

Cao Huan Cao Huan () (245/246–302/303), courtesy name Jingming, was the fifth and last emperor of the state of Cao Wei during the Three Kingdoms period. On 4 February 266, he abdicated the throne in favour of Sima Yan (later Emperor Wu of the Jin dy ...

to abdicate in his favour. The Cao Wei state's existence comes to an end. Sima Yan establishes the Jin Dynasty, and becomes its first emperor on 8 February, and is historically known as "Wu of Jin". He establishes his capital at

Luoyang Luoyang is a city located in the confluence area of Luo River (Henan), Luo River and Yellow River in the west of Henan province. Governed as a prefecture-level city, it borders the provincial capital of Zhengzhou to the east, Pingdingshan to the ...

, and gives his male relatives independent military commands throughout his empire.

Births

Galeria Valeria Galeria Valeria (died 315) was the daughter of Roman Emperor Diocletian and wife of his co-emperor Galerius. Biography Born as Valeria to Diocletian and Prisca, she married Galerius in 293, when her father elevated him to the position of Caes ...

, Roman empress and wife of

Galerius Gaius Galerius Valerius Maximianus (; 258 – May 311) was Roman emperor from 305 to 311. During his reign he campaigned, aided by Diocletian, against the Sasanian Empire, sacking their capital Ctesiphon in 299. He also campaigned across the D ...

(d.

315 __NOTOC__ Year 315 ( CCCXV) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Constantinus and Licinianus (or, less frequently, year ...

) * Wang Dun (or Chuzhong), Chinese general and warlord (d.

324 __NOTOC__ Year 324 ( CCCXXIV) was a leap year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Crispus and Constantinus (or, less frequently, year ...

) * Zu Ti (or Shizhi), Chinese general and adviser (d.

321 Year 321 ( CCCXXI) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. In the Roman Empire, it was known as the Year of the Consulship of Crispus and Constantinus (or, less frequently, year 107 ...

)

Deaths

* Wang Chen (or Chudao), Chinese general and politician * Wang Fan, Chinese astronomer and mathematician (b. 228)

References

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