Margaret married Thomas Beaufort, [DUKE OF EXETER] before 15 Feb 1403/1404 in Of, Hornby, Lancashire, England. Thomas (son of John "of Gaunt" England, [DUKE OF LANCAST and Catherine De Roet, [DUCHESS OF LANC) was born about Jan 1377 in Chateau De Beauf, Meurthe-et-Mosel, ANJOU, France; died on 31 Dec 1426 in Greenwich Manor, East Greenwich, Kent, England; was buried in Abbey, Bury St. Edmunds, Suffolk, England. [Group Sheet] [Family Chart]