Anthemius of Tralles was a Byzantine Greek from Tralles who worked as a geometer and architect in Constantinople, the capital of the Byzantine Empire. With Isidore of Miletus, he designed the Hagia Sophia for Justinian I. 474 – 534; died at about 60. Alive at the same time as Justinian I, Boethius, Brendan the Navigator, Aryabhata, and Benedict of Nursia. Wiki link