Marios Philippides is Professor of Classics, Emeritus at the University of Massachusetts, Amherst, USA. He has published numerous articles on the fall of Constantinople, 1453, on late Byzantine and early post-Byzantine historiography, and on the Palaiologan era. He has authored numerous books and two books with Walter K. Hanak.

Walter K. Hanak was Professor of History, Emeritus at Shepherd University, Shepherdstown, West Virginia, USA. He was the editor and publisher of the scholarly journal Byzantine Studies/Etudes Byzantines for many decades. He has published numerous articles on medieval Greece, Russia, and the Slavonic word. He was the author of a number of books and collaborated with Marios Philippides in the publication of two books.