Caliphs and Kings

Formerly a Fellow of the Institute for Advanced Studies in the Humanities in the University of Edinburgh, Roger Collins is now a Fellow in the School of History, Classics and Archaeology of the University of Edinburgh. He has published widely in medieval Spanish and European history, and his books include: The Basques (Blackwell, 1986), The Arab Conquest of Spain, 710-797 (Blackwell, 1989), Oxford Archaeological Guide to Spain (1998), Charlemagne (1998), Visigothic Spain, 409-711 (Blackwell, 2004), and, most recently, Keepers of the Keys of Heaven: A History of the Papacy (2009).