James's father was assassinated on 21 February 1437 at Blackfriars monastery in Perth. His mother, Queen Joan, although hurt, managed to get to her six-year-old son, who was now king. On 25 March 1437 he was formally crowned King of Scots at Holyrood Abbey. The Parliament of Scotland revoked alienations of crown property and prohibited them, without the consent of the Estates, that is, until James II's eighteenth birthday. He lived along with his mother and five of his six sisters at Dunbar Castle until 1439. The oldest sister, Margaret, had left Scotland for France in 1436 to marry the Dauphin Louis (later King Louis XI of France).