House of Tudor Richmond on 15 December 1449 and was married to Lady Margaret Beaufort, the great-granddaughter of John of Gaunt, the progenitor of the house of Lancaster; Jasper became the first Earl of Pembroke on 23 November 1452. Edmund died on 3 November 1456. On 28 January 1457, his widow Margaret, who had just attained her fourteenth birthday, gave birth to a son, Henry Tudor, at her brother-in-law's Pembroke Castle. Henry Tudor, the future Henry VII, spent his childhood at Raglan Castle, the home of William Herbert, 1st Earl of Pembroke, a leading Yorkist. Following the murder of Henry VI and death
Edmund Grey, 1st Earl of Kent Edmund Grey, 1st Earl of Kent Edmund Grey, 1st Earl of Kent (26 October 1416 – 22 May 1490), English administrator, nobleman and magnate, was the son of Sir John Grey, KG and Constance Holland. His main residence was at Wrest near Silsoe, Bedfordshire. Through Constance Holland, he was great-grandson of John of Gaunt, 1st Duke of Lancaster, the third son of King Edward III of England, by his first wife, and thus grand-nephew of King Henry IV of England and Philippa of Lancaster. Grey succeeded his grandfather Reginald Grey, 3rd Baron Grey de Ruthyn in 1440. He married Lady