Paul Halsall informs me that the noted Byzantinist Cyril A. Mango has died at the age of 92. Among Mango’s many works are The Art of Byzantine Empire (1972), Hagia Sophia: A Vision for Empires (1997); and The Oxford History of Byzantium (2002). 

His older brother, Andrew Mango, biographer of Kemal Atatürk, died in 2014.