Christopher Tyerman is Professor of the History of the Crusades at the University of Oxford; Fellow and Tutor in History at Hertford College, Oxford; and Lecturer in Medieval History at New College, Oxford. He has written extensively on the crusades in British publishing, most recently God's War: A New History of the Crusades and The Debate on the Crusades. He is also the editor of the Penguin Classics edition of the Chronicles of the First Crusade.

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