Roman Emperor notorious for his monstrous vice and fantastic luxury (was said to have started a fire that destroyed much of Rome in 64) but the Roman Empire remained prosperous during his rule (37-68)
Emperor of Rome who stopped the persecution of Christians and in 324 made Christianity the official religion of the Roman Empire; in 330 he moved his capital from Rome to Byzantium and renamed it Constantinople (280-337)
Roman Emperor who when faced with military problems decided in 286 to divide the Roman Empire between himself in the east and Maximian in the west; he initiated the last persecution of the Christians in 303 (245-313)