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 due to the inheritance of the Plantagenet blood through Margaret. The marriage was consummated, leaving a 13-year-old widow who was seven months pregnant with their child at the time of his death. A crisis emerged during the summer of 1453, as Henry fell ill lasting over 17 months, leaving him incommunicado and needing to be carried from place to place. Several parties sought to take power during this period, including Richard of York. Henry's wife, Margaret of Anjou, demanded to be declared Regent for the King, causing a division between her and the Tudor brothers who wished to lend assistance