Martinian was Roman emperor from July to 18 September 324. He was raised to the purple by the emperor Licinius, whom he had hitherto served as a senior bureaucrat, during Licinius's civil war against the emperor Constantine I. Constantine defeated both emperors and forced them to abdicate, and executed them after initially showing leniency. Born: January 1, 250 Died: 324 In office: July 324 – September 19, 324 Wiki link