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 Tudor, 1st Earl of Richmond Henry was still without children. After the death of Humphrey, Duke of Gloucester, the royal line was at risk and considerations were made about the Tudor brothers inheriting the throne. There were concerns that while they had descended from the French royal line through Catherine, they had no blood relation to the English throne. Both Edmund and Jasper were among a small group of personal advisers to the King by 1452, representing the only blood relations in court. However, neither was skilled at matters of state within England, and instead they were primarily given the task of ensuring the authority