Osbern de Crépon Seigneur de Breteuil

  General Notes:

~Cokayne's Complete Peerage, 2nd Edition, (Hereford), Vol. VI, p. 447, Osbern was the son of Herfast, whose sister Gunnor, m. Richard I, Duke of Normandy [Jumièges, ed. Duchesne, p. 299 D]. ¹⁴¹

  Noted events in his life were:

• Background Information: Robert de Torigny and the family of Gunnor, Duchess of Normandy. ¹⁹³ Osbern, who was the steward to the later Dukes, and was murdered by William de Montgomery while defending Duke William. He married a niece of Richard I (the daughter of his half-brother) and by her he was the father of the Conquest baron, William Fitz Osbern.

Osbern married Emma d’Irvy, daughter of Raoul comté d’Irvy and Albreda.