Grégory Combalbert, Ph.D. (2009), Caen Normandy University, is an associate professor at Caen Normandy University. He works on the Church, the Gregorian Reform and Episcopal diplomatics in Normandy and recently published Sauf le droit épiscopal”. Évêques, paroisses et société dans la province ecclésiastique de Rouen (2021).Véronique Gazeau, Ph.D. (1987), Caen Normandy University, is a professor emeritus at Caen Normandy University. She researches monasticism and power in medieval Normandy. Her publications include Normannia Monastica (2007, 2 vols.), an examination of Norman Benedictine abbots and their relationship with the ducal power.