Theodosius IThe·o·do·sius I
(Flavius Theodosius) 346?-395; Rom. general: emperor of Rome (379-395): called the Great
Known as “Theodosius the Great.” AD 346?-395
Emperor of Rome who ruled jointly (379-392) with Gratian and Valentinian II and independently (392-395). He repressed paganism and Arianism and in his will divided the eastern and western portions of the empire between his two sons.