What day did the son of Lady Margaret Beufort seize the English crown?
Henry VII of England Henry VII (Welsh: "Harri Tudur" ; 28 January 1457 – 21 April 1509) was King of England from seizing the crown on 22 August 1485 until his death on 21 April 1509, and the first monarch of the House of Tudor. He ruled the Principality of Wales until 29 November 1489 and was Lord of Ireland.
Isabel le Despenser, Countess of Worcester Isabel le Despenser, Countess of Worcester and Warwick, LG (26 July 1400 – 1439) was the posthumous daughter and eventually the sole heiress of Thomas le Despenser, 1st Earl of Gloucester (died 1399) by his wife, Constance of York. She was born six months after her father had been beheaded for plotting against King Henry IV (1399–1413).