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  Research Notes:

The diocese of Bayeux comprised only the pagus Bajocassinus (le Bessin), in which the county of Bayeux later developed. Raoul d’Ivry, uterine half-brother of Richard I Duke of Normandy, seems to have been recognised with the title count by his half-brother, which is generally applied to the castle of Bayeux which he constructed. The title, however, did not survive his death and no further counts of Bayeux are recorded. ¹

Guillaume of Jumièges records that “Richardus I filius Willelmi Longæspatæ...mater eius Sprota” and “Asperlengi” and that they had “filium Rodulphum...et filias plures”. ²