Joseph CanningJoseph Canning is Affiliated Lecturer in the Faculty of History at the University of Cambridge. A Fellow of the Royal Historical Society, he is the author of The Political Thought of Baldus de Ubaldis (1987), A History of Medieval Political Thought, .300-c.1450 (1996) and Ideas of Power in the Late Middle Ages, 1296-1417 (2011). Read More Read Less