Guy Perry, Associate Professor and Principal of the Middlebury-CMRS Oxford Humanities Program, and Fellow by Special Election of Keble College, Oxford. Guy did his BA, MA/MSt and DPhil at Lincoln College, Oxford. He then served as a tutor or lecturer at a wide range of universities across the UK: from Royal Holloway, University of London and Leeds to St Peter’s and Merton Colleges, Oxford. His research focuses, above all, on social and geographical mobility during the central Middle Ages – and, in particular, during the epoch of the Crusades. His publications include John of Brienne: King of Jerusalem, Latin Emperor of Constantinople, c.1175-1237 (Cambridge: Cambridge University Press, 2013); The Briennes: the Rise and Fall of a Champenois Dynasty in the Age of the Crusades, c.950-1356 (Cambridge: Cambridge University Press, 2018); and a co-edited volume, The Fifth Crusade in Context: the Crusading Movement in the Early Thirteenth Century (Abingdon: Routledge, 2017).