Aryabhata or Aryabhata I was the first of the major mathematician-astronomers and early physicist from the classical age of Indian mathematics and Indian astronomy. His works include the Āryabhaṭīya and the Arya-siddhanta. 476 – 550; died at about 74. Alive at the same time as Justinian I, Gregory I, Boethius, Benedict of Nursia, and Clovis I. Wiki link