Författare: Conrad Leyser

Ernst H. Kantorowicz (1895–1963) taught at the University of California, Berkeley, and was a member of the Institute for Advanced Study in Princeton. Conrad Leyser is associate professor of medieval history at Worcester College, University of Oxford. He is the author of Authority and Asceticism from Augustine to Gregory the Great. William Chester Jordan is professor of history at Princeton University. He is the author of From England to France: Felony and Exile in the High Middle Ages (Princeton).