400 deaths

Gainas (?-400 AD, Greek: Γαϊνάς) was a Gothic leader who served the Eastern Roman Empire as magister militum during the reigns of Theodosius I and Arcadius. He played an important role in the events in the eastern part of the empire by the end of the 4th century.

Tribigild, also called Tarbigilus (; ; 399) was an Ostrogothic general whose rebellion against the Eastern Roman Empire precipitated a major political crisis during the reign of Emperor Arcadius.

Simplician (; ) was Bishop of Milan from 397 to 400 or 401 AD. He is honoured as a Saint in the Roman Catholic and Eastern Orthodox Churches and his feast day is August 14.

emperor of Later Liang

Chinese emperor

Saint of Veneto in the catholic church

wife of Murong Bao, emperor of Later Yan

Chinese empress