8th January » Emperor Hui of Jin Jin Huidi, List of Chinese monarchs Chinese Emperor of the Jin Dynasty (265–420) Jin Dynasty, is poisoned and succeeded by his son Emperor Huai of Jin Jin Huaidi.
31st March » After divorcing his wife Minervina, Constantine the Great e.g Constantine marries Fausta, the daughter of the retired Roman Emperor Maximian.
16th September » Emperor Flavius Valerius Severus known as Severus II is captured and imprisoned at Three Taverns or Tres Tabernae. He is later executed (or forced to commit suicide) after Galerius unsuccessfully invades Italy.