Lanfranc of Pavia ⓘ was Archbishop of Canterbury from 1070 to 1089 and one of the most important architects of the Anglo-Norman Church in the generation following the Norman Conquest of England in 1066. Born in Pavia in northern Italy, he first gained renown as a teacher of the liberal arts before entering monastic life in Normandy, where he became associated with the reforming monastery of Bec.

At Bec Lanfranc emerged as one of the leading intellectual figures of eleventh-century Europe. His writings included biblical commentaries, particularly on the Pauline epistles, and theological works produced during the Eucharistic controversy with Berengar of Tours, in which he defended the orthodox doctrine of the real presence. His reputation for learning and administration led Duke William of Normandy to appoint him abbot of Saint-Étienne ⓘ at Caen, a major monastic foundation closely tied to the Norman ducal house.

After the Norman Conquest, William ⓘ appointed Lanfranc Archbishop of Canterbury in 1070. During nearly two decades in office he worked closely with the king to reorganize the English Church after the upheavals of conquest. Through a series of church councils and reforms he strengthened ecclesiastical discipline, reorganized episcopal structures, and reinforced Canterbury’s authority within the English church. Although a loyal collaborator of the king, Lanfranc remained fundamentally a monk-archbishop, governing a cathedral that was itself a Benedictine monastery.

Lanfranc also asserted the primacy of Canterbury ⓘ over the churches of Britain and Ireland. His dispute with Thomas of Bayeux ⓘ, Archbishop of York, was addressed at the Council of Winchester in 1072, which affirmed Canterbury’s seniority within the English church, though the issue remained a recurring source of tension in later centuries. His relations with the great reforming pope Gregory VII ⓘ were notably cautious, reflecting the delicate balance he maintained between papal authority and royal power in the newly formed Anglo-Norman realm.