Saint Constantine, was a Roman Emperor, proclaimed Augustus by his troops on July 25, 306 and who ruled an ever-growing portion of the Roman Empire until his death.
Marcus Aurelius Valerius Maxentius was Western Roman Emperor from 306 to 312. He was the son of former emperor Maximian, and the son-in-law of Galerius, also an emperor.
The War of the Eight Princes or Rebellion of the Eight Kings or Rebellion of the Eight Princes was a civil war for power among princes or kings of the Chinese Jin Dynasty from AD 291 to AD 306