Reed, Paul C., Robert Patric. Posting to soc.genealogy.medieval (email list GEN-MEDIEVAL) on 7/5/1998. Subject: Gilbert de Malpas (Isabella Patrick). Available at https://groups.google.com/g/soc.genealogy.medieval/c/FXmZGE40sGc/m/jrAwlVerQeMJ. Author address: reedpcgen at aol dot com. Information from this source tagged as [Ref: Paul Reed SGM 7/5/1998].