Year 304 ( CCCIV) was a

leap year starting on Saturday A leap year starting on Saturday is any year with 366 days (i.e. it includes 29 February) that begins on Saturday, 1 January, and ends on Sunday, 31 December. Its dominical letters hence are BA. The most recent year of such kind was 2000, and the ...

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 ...

. It was known in the

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 ...

as the Year of the Consulship of Diocletian and Maximian (or, less frequently, year 1057 ''

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 304 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

* Caesar

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 ...

, perhaps accompanied by 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 ...

, wins his fourth and final victory over the Carpi. Many of the surviving Carpi and

Bastarnae The Bastarnae, Bastarni or Basternae, also known as the Peuci or Peucini, were an ancient people who are known from Greek and Roman records to have inhabited areas north and east of the Carpathian Mountains between about 300 BC and about 300 AD, ...

are resettled in the Roman Empire, where they are split up. The Bastarnae are not attested after this time, and the Carpi are attested only once more in the 310s. * Diocletian, while inspecting the

Danube The Danube ( ; see also #Names and etymology, other names) is the List of rivers of Europe#Longest rivers, second-longest river in Europe, after the Volga in Russia. It flows through Central and Southeastern Europe, from the Black Forest sou ...

border, becomes seriously ill. * Caesar

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 ...

besieges a Germanic raiding force on an island in the Rhine and forces their surrender.

Asia

Sixteen Kingdoms The Sixteen Kingdoms (), less commonly the Sixteen States, was a chaotic period in Chinese history from AD 304 to 439 when northern China fragmented into a series of short-lived dynastic states. The majority of these states were founded b ...

: The

Xiongnu The Xiongnu (, ) were a tribal confederation of Nomad, nomadic peoples who, according to ancient Chinese historiography, Chinese sources, inhabited the eastern Eurasian Steppe from the 3rd century BC to the late 1st century AD. Modu Chanyu, t ...

establishes the

Han-Zhao The Han-Zhao ( zh, s=汉赵, t=漢趙, p=Hàn Zhào; 304–329 AD), or Former Zhao ( zh, s=前赵, t=前趙, p=Qián Zhào), was a dynastic state of China ruled by the Liu ( Luandi) clan of Chuge-Xiongnu ethnicity during the Sixteen Kingdoms per ...

state under Liu Yuan, often seen as the start of the

Upheaval of the Five Barbarians The Upheaval of the Five Barbarians also translated as the Uprising, Rebellion or the Revolt of the Five Barbarians () is a Chinese expression used to refer to a chaotic period of warfare from 304 to 316 during the fall of the Western Jin dynast ...

. *

Cheng-Han Cheng-Han (; 303 or 304 – 347) was a dynastic state of China listed as one of the Sixteen Kingdoms in Chinese historiography. Ruled by the Li clan of the Ba-Di people, its territory was based in what is modern-day Sichuan Province, China. The ...

earns its independence from

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) ...

. *

Biryu Biryu (?-?) was the second son of Jumong and So Seo-no, and older brother of Onjo, the traditionally recognized founder of Baekje (18 BCE–660 CE), which was one of the Three Kingdoms of Korea. In an alternate legend, Biryu himsel ...

becomes king of the Korean kingdom of

Baekje Baekje or Paekche (; ) was a Korean kingdom located in southwestern Korea from 18 BCE to 660 CE. It was one of the Three Kingdoms of Korea, together with Goguryeo and Silla. While the three kingdoms were in separate existence, Baekje had the h ...

By topic

Religion

October 25 Events Pre-1600 * 285 or 286 – Execution of Crispin and Crispinian, Saints Crispin and Crispinian during the reign of Diocletian, now the patron saints of leather workers, curriers, and shoemakers. * 473 – Emperor Leo I (emperor), ...

–

Pope Marcellinus Pope Marcellinus was the bishop of Rome from 30 June 296 to his death in 304. A historical accusation was levelled at him by some sources to the effect that he might have renounced Christianity during Emperor Diocletian's persecution of Christia ...

dies at Rome after an 8-year reign. The papal throne will remain vacant until 308.

Births

Deaths

''Note: Not all particulars of the Christian martyrs are supported by reliable historical evidence.'' *

January 21 Events Pre-1600 * 763 – Following the Battle of Bakhamra between Alids and Abbasids near Kufa, the Alid rebellion ends with the death of Ibrahim, brother of Isa ibn Musa. * 1525 – The Swiss Anabaptist Movement is founded wh ...

– Saint Agnes of Rome (martyred by fire) (b. c. 291) * March 19/20 –

Sima Ai Sima Ai or Sima Yi (司馬乂) (277 – 19/20 March 304), courtesy name Shidu (士度), formally Prince Li of Changsha (長沙厲王), was a Jin dynasty imperial prince who briefly served as regent for his half-brother Emperor Hui. He was the ...

, Chinese prince of the

(executed) (b. 277) *

May 12 Events Pre-1600 * 254 – Pope Stephen I succeeds Pope Lucius I, becoming the 23rd pope of the Catholic Church, and immediately takes a stand against Novatianism. * 907 – Zhu Wen forces Emperor Ai into abdicating, ending the ...

(or 303?) –

Saint Pancras of Rome Pancras (Latin: ''Sanctus Pancratius'') was a Roman citizen who converted to Christianity and was beheaded for his faith at the age of fourteen, around the year 304. His name is Greek ( ), meaning 'all-powerful'. From an early period, Pancras wa ...

(martyred by beheading) (b. c. 289) * c. October? –

Bunseo of Baekje King Bunseo (died 304, r. 298–304) was the tenth king of Baekje, one of the Three Kingdoms of Korea. Background He was the eldest son of King Chaekgye. He became king upon Chaekgye's death in 298 when he was killed in battle during the 13th ...

, king of

(

Korea Korea is a peninsular region in East Asia consisting of the Korean Peninsula, Jeju Island, and smaller islands. Since the end of World War II in 1945, it has been politically Division of Korea, divided at or near the 38th parallel north, 3 ...

) (assassinated) * c. August 10 –

Saint Philomena Philomena ( ), also known as Saint Philomena (; ) or Philomena of Rome ( 10 January 291 10 August 304) was a virgin martyr whose remains were discovered on May 24–25, 1802, in the Catacomb of Priscilla. Three tiles enclosing the tomb bore a ...

(martyred by beheading) *

–

December 25 Events Pre-1600 * 36 – Forces of Emperor Guangwu of the Eastern Han, under the command of Wu Han, conquer the separatist Chengjia empire, reuniting China. * 274 – A temple to Sol Invictus is dedicated in Rome by Emperor Aurelian. ...

– Saint Anastasia of Sirmium (martyred by beheading) *Date unknown **

Saint Afra Saint Afra (died 304) was martyred during the Diocletian persecution. Along with Saint Ulrich & St Simpert, she is a patron saint of Augsburg. Her feast day is August 7. Afra was dedicated to the service of the goddess Venus by her mother, H ...

(martyred by fire) ** Saints Agape, Chionia, and Irene (martyred by fire and sword) **

Saint Alban Saint Alban (; ) is venerated as the first-recorded British Christian martyr, for which reason he is considered to be the British protomartyr. Along with fellow Saints Julius and Aaron, Alban is one of three named martyrs recorded at an ea ...

(martyred by beheading) (possibly 309) **

Saint Florian Florian (; AD 250 – 304) was a Christian holy man and the patron saint of chimney sweeps; soapmakers, and firefighters. His feast day is 4 May. Florian is also the patron saint of Poland, the city of Linz, Austria, and Upper Austria, jointl ...

(martyred by drowning) ** Saint Gorgonius of Nicomedia (martyred) ** Saint Juliana of Nicomedia (martyred) ** Saint Lucy of Syracuse (martyred by fire and sword) **

Saint Margaret the Virgin Margaret, known as Margaret of Antioch in the West, and as Saint Marina the Great Martyr () in the East, is celebrated as a saint on 20 July in Western Christianity, on 30th of July (Julian calendar) by the Eastern Orthodox Church, and on Epip ...

(martyred by beheading) ** Saints Theodora and Didymus (martyred by beheading) **

Saint Vincent of Saragossa Vincent of Saragossa (also known as Vincent Martyr, Vincent of Huesca or Vincent the Deacon), the Protomartyr of Spain, was a deacon of the Roman Catholic Archdiocese of Zaragoza, Church of Saragossa. He is the patron saint of Lisbon, Algarve, a ...

(martyred)

References

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