Christopher Tyerman is Professor of the History of the Crusades, University of Oxford, a 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, 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.

Christopher Tyerman is Professor of the History of the Crusades, University of Oxford, a 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, 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.

Christopher Tyerman is Professor of the History of the Crusades, University of Oxford, a 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, 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.