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 Butler, 1st Earl of Kilkenny the 13th Lord Viscount Mountgarret in 1846. Edmund Butler, 1st Earl of Kilkenny Edmund Butler, 1st Earl of Kilkenny, 12th Viscount Mountgarret (6 January 1771 – 16 July 1846) was created Earl of Kilkenny on 20 December 1793. The son of Edmund Butler, 11th Viscount Mountgarret and Henrietta Butler, he was thus a member of the powerful Butler Dynasty descended from the illustrious House of Butler of Ormond, who purchased and resided at Kilkenny Castle from 1391 to 1967. He married Mildred Fowler, daughter of Robert Fowler, Archbishop of Dublin, without issue. On his death the Earldom thus became extinct