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 route to Wales, he was arrested and imprisoned in Newgate Prison. After he escaped in early 1438, he was recaptured and imprisoned once more in Windsor Castle. Following the death of their mother and the imprisonment of their father, Edmund and his brother Jasper were brought up in the care of Katherine de la Pole, the daughter of Michael de la Pole, 2nd Earl of Suffolk, with whom they remained till at least March 1442. Henry VI began to take notice of his half-brothers by that point. He ensured that they were placed in the care of priests who oversaw