Curt Hofemann, curt_hofeman@@yahoo.com, wrote in a post-em:
A charter for Daint-Pere of Chartres, which was passed before 1061, and probably before 1053, show that at the time the family had then obtained full lordship of Vernon, together with its castle; and William of Vernon retained tis lordship until after the Norman conquest, his last recorded act being in 1077 when he made a grant to the monestary of Le Bec. It is rare indeed that the origin of a Norman territorial family of the second class can be illustrated with this particularity from the independent charters of four religious houses. [Ref: Wm. the C., Douglas, p87