deaths
November 13, 1440
Joan Beaufort, Countess of Westmoreland
Joan Beaufort, Countess of Westmorland
Joan Beaufort was the youngest of the four legitimised children and only daughter of John of Gaunt, 1st Duke of Lancaster, by his mistress, later wife, Katherine de Roet. She married Ralph de Neville, 1st Earl of Westmorland and in her widowhood became a powerful landowner in the north of England.