Roger married Philippe De Montagu, [Countess of Mar about 1354 in , Donyatt, Somersetshire, England. Philippe (daughter of William De Montagu (Montacu, [EARL OF SALISBU and Katherine De Grandison, [Cntss Salisbury) was born about 1332 in Of, SALISBURY, Wiltshire, England; died on 5 Jan 1381/1382 in , Bisham, Berkshire, England; was buried in , Bisham, Berkshire, England. [Group Sheet] [Family Chart]