VIII of England's daughter Lady Elizabeth (later Elizabeth I). This may have been offered by Henry himself as a price of the Regent's allegiance, but nothing came of the proposal either. Henry wanted to marry the baby queen to his son Edward. The Regent was a Protestant, and initially supported this in public, despite widespread opposition in Scotland. Then in 1543 the Regent became Catholic and joined the pro-French faction of Cardinal Beaton. Henry responded with the "Rough Wooing", nine years of war to make Scotland accept the English marriage. In October 1544, James was taken to St Andrews Castle, where he was Cardinal Beaton's guest and a pledge for the alliance of the Regent and the Cardinal. The Regent still wanted to marry Mary to James. His half-brother, John, Abbot of Paisley, met with Lord Somerville and the Earl of Angus on 28 October 1545, to get their support. Somerville's son John wrote to Mary of Guise that they would not be persuaded. Alexander Crichton of Brunstane and a diplomat in France, Johannes Sturm, also sent warnings of this marriage proposal to England. Sturm realised the marriage would hinder Anglo-French peace treaty negotiations. James remained in the Cardinal's custody. In February 1546 he was sent a book of Latin exercises and a copy of Aesop's Fables. In 1546, a Protestant band seized St Andrews Castle and murdered the Cardinal. James was held prisoner. The Regent besieged St Andrews; the Protestants offered to give James to Henry VIII, in return for the help of an English fleet. Henry VIII was willing, but never actually sent the fleet. On 14 August 1546, the Parliament of Scotland excluded James from the royal succession (he was then third) for the duration of his captivity. Despite Henry's promises, the castle was finally taken with the help of French ships. Regent Arran now agreed to the marriage of Mary to the Dauphin Francis, son and heir of King Henry II of France, confirmed by the Treaty of Haddington. For arranging the marriage of Mary and Francis, the Regent was made Duke of Châtellerault, and James succeeded him as Earl of Arran. He would not inherit the French title, his father having forfeited it in 1559. In France Queen Mary was sent to France in August 1548. James Hamilton went with her or shortly earlier in July. Though only a boy of 16 or younger, he