Margaret married John de Vere, 13th Earl of Oxford. John (son of John de Vere, 12th Earl of Oxford and Elizabeth Howard) was born on 8 Sep 1442; died on 10 Mar 1513 in Hedingham Castle, Castle Hedingham, Essex, England; was buried on 24 Apr 1513 in Colne Priory, Earls Colne, Essex, England. [Group Sheet]