Justinian I, also known as Justinian the Great, was Roman emperor from 527 to 565. His reign was marked by the ambitious but only partly realized renovatio imperii. This ambition was expressed by the partial recovery of the territories of the defunct Western Roman Empire. May 12, 482 – November 16, 565; died at 83. Alive at the same time as Gregory I, Aryabhata, Boethius, Benedict of Nursia, and Clovis I. Wiki link