Falaise Roll: Recording Prominent Companions of William Duke of Normandy at the Conquest of England @ p. 6-7
The cited information was published by Genealogical Publishing Co., Inc., 1994, held in
Cheryl Varner Library (Ref: p. 6-7) The author/originator was Crispin, M. Jackson; Macary, Leonce; with additions and corrections by G. Andrews Moriarty.