331 e.v.

Laurence becomes the angel of the Sword
== Asia ==
Constantine I dedicates the Church of the Holy Apostles in Constantinople. Fifty Bibles of Constantine commissioned for use in Constantinople.
Gogugwon becomes ruler of the Korean kingdom of Goguryeo. Micheon of Goguryeo, Korean ruler of Goguryeo, dies.
Eusebius of Caesarea writes the Onomasticon.
Gregory the Illuminator withdraws to a small sanctuary in the Daranali province (Armenia), and dies.
Yao Chang, Chinese emperor of the Qiang state (he will die in 394 e.v.). Yao Xiang (or Jingguo), Chinese warlord, is born (he will die in 357 e.v.) 
== Europe ==
Emperor Constantine the Great vigorously promotes Christianity, confiscating the property and valuables of a number of pagan temples throughout the Roman Empire. Constantine I promulgates a law against divorce. Jovian, Roman consul and emperor, is born (he will die in 364 e.v.) Julian the Apostate, Roman emperor, is born (he will die in 363 e.v.)
Category:Year
Category:1st millennium era vulgaris
Category:4th century era vulgaris
Category:330s era vulgaris