NameHeldouin BRETEUIL Count Of Breteuil, 31G Grandfather
Web Notes notes for Heldouin BRETEUIL Count Of Breteuil
Stuart's "Royalty for Commoners" (268:34): Count of Breteuil, and Vicomte de Chartres [also Count of Clermont?], died a monk.
Turton's "Plantagenet Ancestry" identifies him possibly as the second son of Hilduin de Ponthieu.