House of Normandy

The House of Normandy originated with Rollo, a Norse warlord who accepted baptism and received lands from the Frankish king Charles the Simple by the Treaty of Saint-Clair-sur-Epte in 911, founding the Duchy of Normandy and taking the Christian name Robert. Over the following century the dynasty underwent a thoroughgoing conversion, and successive dukes fostered Benedictine monasticism across Normandy, most visibly through the reform and endowment of the great abbey at Fécamp. The house reached its greatest power under Duke William II, who conquered England at the Battle of Hastings in 1066, thereafter ruling as William I and reordering the English church with the support of the reforming Lanfranc of Pavia as Archbishop of Canterbury. Religious formation of heirs was integral to Norman ducal culture: princes were placed in ecclesiastical households, educated by clergy, and expected to demonstrate piety through church patronage and support of canon law reform. The direct Norman line died out in the male line after Henry I's death in 1135, giving way to the Blois and Angevin successions, yet its legacy of monastic patronage and ecclesiastical reform shaped the medieval church in both Normandy and England for generations.