As the only daughter of Blanche of Castile, one of France's most powerful queens, and as the sister of the Capetian saint Louis IX, Isabelle of France (1225-1270) was situated at the nexus of sanctity and power during a significant era of French culture and medieval history. In this ground-breaking examination of Isabelle's career, Sean Field uses a wealth of previously unstudied material to address significant issues in medieval religious history,...