Events

By Place

Roman Empire

• The Roman colony of Konstanz is founded.
• Diocletian issues four edicts aimed at destroying Christianity in the Empire.
• A Triumphal Arch is built for Diocletian in Rome.
• Diocletian contracts a fatal illness.

Asia

• Major Wu Hu (barbarian) uprising in China: the Hun Liu Yuan establish the Han kingdom, beginning the Sixteen Kingdoms era in China.
• Sichuan earns its independence from China.

Births

Deaths

• Saint Afra (martyred by fire)
• Saint Agnes (martyred)
• Saint Alban (possibly 309)
• Saint Anastasia
• King Bunseo of Baekje, Korean monarch
• Saint Lucie of Syracuse (martyred)
• Saint Philomena (martyred)
• Saints Theodora and Didymus (martyred)
• October 25 — Pope Marcellinus (martyred)