See Theodosius I in American Heritage Dictionary 4
(thēˌə-dōˈshəs, -shē-əs) Known as “Theodosius the Great.” A.D. 346?-395.
Emperor of Rome who ruled jointly (379-392) with Gratian and Valentinian II and independently (392-395). He prohibited pagan practices and in his will divided the empire between his two sons.