Valentinian III was Roman emperor in the West from 425 to 455. Starting in childhood, his reign over the Roman Empire was one of the longest, but was dominated by civil wars among powerful generals and the barbarian invasions. He was the youngest sole emperor in the Western Roman Empire. July 3, 419 – March 17, 455; died at 35. Alive at the same time as Augustine of Hippo, Bodhidharma, Zu Chongzhi, Geiseric, and Proclus. Wiki link