Margaret married Baldwin De Rivers about 1215 in Of, Isle Of Wight, Hampshire, England. Baldwin (son of William (De Vernon) Reviers, [Earl of Devon] and Mabel (Mabirie) De Beaumont, [COUNTESS OF DEV) was born after 28 Apr 1200 in Of, Isle Of Wight, Hampshire, England; died on 1 Sep 1216. [Group Sheet] [Family Chart]