Earl of Richmond as the Earl of Richmond. He had one son, Henry VII who was born posthumously circa 1456. The Earldom of Richmond was replaced by the Dukedom of Richmond which was named after Richmond and its surrounding district of Richmondshire. It has been held by members of the royal Tudor and Stuart families. The current dukedom of Richmond initially maintained the historic ties of Richmond to Brittany when it was created in 1675 for Charles Lennox: he was the illegitimate son of King Charles II of England and a noble bretonne, Louise de Penancoët de Kérouaille. From 1341, the title and
Edmund Tudor, 1st Earl of Richmond eldest of John of Gaunt's bastard sons, John Beaufort. She had been previously married to John de la Pole, whose father, William de la Pole, 1st Duke of Suffolk had intended to seek the claim to the throne of her and any children should Henry fail to produce any heirs. William was murdered in 1450, and the marriage between Margaret and John was annulled in the first months of 1453 to enable her to be remarried to Edmund. It was this marriage on 1 November 1455 at Bletsoe Castle which enabled any offspring to lay claim to the English throne