Brian A. Catlos is Professor of Religious Studies at the University of Colorado at Boulder and Research Associate in Humanities at the University of California, Santa Cruz, USA. He is the award-winning author of The Victors and the Vanquished: Christians and Muslims of Catalonia and Aragon, 1050-1300; Muslims of Medieval Latin Christendom; and Infidel Kings and Holy Warriors. Sharon Kinoshita is Professor of Literature at the University of California, Santa Cruz, USA, specializing in Medieval French Literature, Mediterranean Studies, and the Global Middle Ages. She is the author of Medieval Boundaries: Rethinking Difference in Old French Literature and co-editor of the Blackwell Companion to Mediterranean History.