A synod was held at Lisieux in 1055 by the Papal Legate, Bishop Hermanfried of Sion, with the cooperation of Duke William d'Eu, the illegitimate son of Richard I of Normandy, in which Archbishop Malgerius of Rouen was deposed.

His dissolute life was notorious, he had refused to attend a Roman Council though summoned, and he made rebellion against the Duke.

[3] In the middle of October 1106, King Henry I of England visited Lisieux, where he held an assembly of the leading figures of the duchy of Normandy, both lay and ecclesiastical.

His wishes ran contrary to those of Pope Martin V, leading to the appointment of Cardinal Branda da Castiglione as administrator of the diocese.

The dignities were: the Dean, the Cantor, the Treasurer, the Capicerio, the Magister Scholarum, and the four Archdeacons (Lieuven, Auge, Pont-Audemer, and Gacé).

[14] The sole exception was the male Abbey of Mondaye, located at Mont-Dée, which was a house of Canons Regular belonging to the Order of Premonstratensians.