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 Edmund to uphold the authority of the King in South Wales. While he was there, York was overthrown by the King and in retaliation, Yorkist forces were sent to engage those of Tudor's in South Wales. Edmund was captured at Carmarthen Castle, and died there of the bubonic plague on 3 November 1456. Following the death of Henry V of England, the Queen dowager Catherine of Valois married Owen Tudor. The marriage was in secret, and was not common knowledge until after Catherine's death. It is accepted that Catherine and Owen were married around 1429/30, as the Queen stopped living