Events

• Mid-February: Lentienses cross frozen Rhine, invading Roman Empire. Later that year they are defeated by Gratianus.
• August 9 - Battle of Adrianople: A large Roman army led by Emperor Valens is defeated by the Visigoths in present-day Turkey. Valens is killed along with 2/3 of his army.
• Gregory Nazianzus ordained bishop of Constantinople.
• Theodosius I becomes eastern Roman emperor after the death of Valens.
• Pope Damasus I is accused of adultery but is exonerated by emperor Gratian.
• Siyah K'ak' begins to replace Mayan kings with relatives of Spearthrower Owl, emperor of Teotihuacan.

Births

• Germanus of Auxerre, bishop of Auxerre

Deaths

• Roman Emperor Valens (at the Battle of Adrianople)
• Khui Ningomba , Meitei King of Manipur.