304

File:Vicente de Zaragoza by Tomás Giner, 1462–1466.jpg

Saint Vincent of Saragossa

Year 304 (CCCIV) was a leap year starting on Saturday of the Julian calendar. It was known in the Roman Empire as the Year of the Consulship of Diocletian and Maximian (or, less frequently, year 1057 Ab urbe condita). The denomination 304 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Events

By place

Roman Empire

• Caesar Galerius, perhaps accompanied by Emperor Diocletian, wins his fourth and final victory over the Carpi. Many of the surviving Carpi and Bastarnae 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 border, becomes seriously ill.
• Caesar Constantius I besieges a Germanic raiding force on an island in the Rhine and forces their surrender.

Asia

• Sixteen Kingdoms: The Xiongnu establishes the Han-Zhao state under Liu Yuan, often seen as the start of the Upheaval of the Five Barbarians.
• Cheng-Han earns its independence from Jin dynasty.
• Biryu becomes king of the Korean kingdom of Baekje.<ref>{{#invoke:citation/CS1|citation

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By topic

Religion

• October 25 – Pope Marcellinus dies at Rome after an 8-year reign. The papal throne will remain vacant until 308.

Deaths

File:Marcellinus.jpg

Pope Marcellinus

File:Saint Anastasia.jpg

Anastasia

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

• January 21 – Saint Agnes of Rome (martyred by fire) (b. c. 291)
• March 19/20 – Sima Ai, Chinese prince of the Jin dynasty (executed) (b. 277)<ref>Template:Cite book</ref>
• May 12 (or 303?) – Saint Pancras of Rome (martyred by beheading) (b. c. 289)
• c. October? – Bunseo of Baekje, king of Baekje (Korea) (assassinated)<ref name=met>{{#invoke:citation/CS1|citation

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• c. August 10 – Saint Philomena (martyred by beheading)
• October 25 – Pope Marcellinus
• December 25 – Saint Anastasia of Sirmium (martyred by beheading)
• Date unknown
  • Saint Afra (martyred by fire)
  • Saints Agape, Chionia, and Irene (martyred by fire and sword)
  • Saint Alban (martyred by beheading) (possibly 309)
  • Saint Florian (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 (martyred by beheading)
  • Saints Theodora and Didymus (martyred by beheading)
  • Saint Vincent of Saragossa (martyred)