It seems that it was in Hampshire that this family originated: William held lands outside the west gate of Winchester. The family's interests, however, probably extended outside the bounds of this county, since William founded the nunnery of Polsloe, Devon.
Geni. William de Briwere, I, born c1086, died 1118. Wife was Adelisa de Vernon.
Oxford Dictionary of National Biography
Phillips, Weber, Kirk and Staggs Families of the Pacific Northwest, by Jim Weber, on rootsweb.com