Graham A. Loud is Professor of Medieval History at the University of Leeds, where he was Head of the School of History 2012–15. He holds a Leverhulme Major Research Fellowship 2017–19, during which he is working on a book about the social history of the principality of Salerno, c.1020–1300, as revealed by the charters of the abbey of Holy Trinity, Cava. Among his previous books are The Age of Robert Guiscard. Southern Italy and the Norman Conquest (Harlow 2000), The Latin Church in Norman Italy (Cambridge 2007), Roger II and the Creation of the Kingdom of Sicily (Manchester 2012), and The Origins of the German Principalities, 1100–1350, edited with Jochen Schenk (Routledge 2017). He has also translated The Crusade of Frederick Barbarossa for the series ‘Crusade Texts in Translation’ (2010).