On 03 Jan 1458 Henry Stafford (age 33) and Margaret Beaufort Countess Richmond (age 14) were married probably at Maxstoke Castle [Map]. Her third marriage (second if you don't include the one annulled) aged fourteen and already the mother of the future King Henry VII. She had no further issue. She the daughter of John Beaufort 1st Duke Somerset and Margaret Beauchamp Duchess Somerset (age 48). He the son of Humphrey Stafford 1st Duke of Buckingham (age 55) and Anne Neville Duchess Buckingham (age 50). They were second cousins. He a great x 2 grandson of King Edward III of England. She a great x 2 granddaughter of King Edward III of England.