Richardson, Douglas, Royal Ancestry. Salt Lake City, Utah: Douglas Richardson, 2013. NYPL JFF 16-1184 v1-5 Information from this source tagged as [Ref: Richardson RoyalAnc v4p[0-9]*].
Sources for birth and parent Information
parents:
William Le GRAS & dau John Fitz Gilbert [Ref: Richardson RoyalAnc
v4p39]
Research Notes:
monk at Westminster [Ref: Richardson RoyalAnc v4p39]