Family/Spouse: Margaret De MORTIMER. Margaret (daughter of Roger De MORTIMER, Sir/1St Earl Marche/8Th Baron and Joan De GENEVILLE, Lady) was born in 1308 in Berkeley, Glouchester, England; died on 5 May 1337 in Berkeley, Glouchester, England; was buried on 13 May 1337 in St Augustines, Bristol, Gloucestershire, England. [Group Sheet] [Family Chart]