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 of Woodstock, 1st Earl of Kent and Edmund took part in the invasion. The invasion won the support of a great part of the English nobility, including Edmund's brother Thomas, and Henry, Earl of Lancaster, Thomas of Lancaster's brother. Edmund took part in the trials of the two Despensers, and in the council transferring power to Prince Edward, who was crowned King Edward III. For his participation in the coup, Edmund received a reward of land belonging to the Despensers, and the Earl of Arundel, who was also executed as a supporter of Edward II. As the Northern situation was still difficult, Edmund was given joint