Mary de Reviers de Vernon
- Born: Abt 1183, Vernon, Eure, Normandy, France
- Marriage: Robert de Courtenay
~Ancestral Roots of Certain American Colonists Who Came to America before 1700, 8th Edition, 50:28, Mary de Vernon (or de Reviers). m. 1st, 1200, Sir Peter de Preaux of Chagford, Devon; m. 2nd, Sir Robert de Courtenay, d. 26 Jul 1242, feudal baron of Aokhampton.
Mary married Robert de Courtenay, son of Sir Renaud de Courtenay Baron of Okehampton and Hawise de Courcy Lady Of Okehampton. (Robert de Courtenay was born about 1183 in Okehampton, Devon, England, died on 26 Jul 1242 in Iwerne, Dorset, England 141 and was buried in 1242 in Ford Abbey, Devonshire, England 141.)