Speros Vryonis Jr
Speros Vryonis Jr., born Jul 18, 1928 in Memphis, Tn,ÂÂÂ is an American historian of Greek descent and a specialist in Byzantine, Balkan, and Greek history. He is the author of a number of works on Byzantine and Greek-Turkish relations, including his seminal The Decline of Medieval Hellenism in Asia Minor and The Mechanism of Catastrophe.