William de Falaise was a Norman from Falaise, Normandy, today in the Calvados department in the Lower Normandy region in northwestern France. He was feudal baron of Stogursey in Somerset, and held in addition lands in Devon. The Exeter Domesday Book lists him as holding the following seventeen Devon manors as a tenant-in-chief of the king:Thorn, Caroline & Frank, Domesday Book, Vol.9, Devon, vol.2 (notes), Chichester, 1985, Chapter 20
