of Henry VIII of England, with whom he had a daughter, Margaret Douglas, mother of Henry Stuart, Lord Darnley. In 1545, Angus led his forces to victory at the Battle of Ancrum Moor where they defeated the English army during the Rough Wooing, and he was also present at the defeat in 1547 at the Battle of Pinkie Cleugh. James Douglas, 4th Earl of Morton, nephew of the 6th Earl of Angus, was a bitter enemy of Mary, Queen of Scots. He was one of the murderers of the queen's secretary David Rizzio and was heavily implicated in the murder of her second husband Lord Darnley. In 1572 he was elected regent for the still minor King James VI. In many respects Morton was an energetic and capable ruler, but he was brutal in crushing factions still loyal to Queen Mary. Regent Morton was finally forced to resign in March 1578, but retained much of his power. Ultimately, he was accused of complicity in the murder of Darnley and was executed in 1581. 17th century and the Bishops' War During the Wars of the Three Kingdoms, William Douglas, 11th Earl of Angus, a Catholic, was a supporter of King Charles I. In 1633, he was created Marquess of Douglas. Following the Battle of Kilsyth in 1645, he joined James Graham, 1st Marquess of Montrose, and was present when Royalist forces fought Covenanter cavalry at the Battle of Philiphaugh where he barely escaped with his life. Following Cromwell's victory, he was able to make peace and was fined £1,000. In 1660, William Douglas, the brother of the second Marquess of Douglas became, through marriage, the Duke of Hamilton. Eventually, the titles of Marquess of Douglas, Earl of Angus, and several others devolved to the Dukes of Hamilton and the heir of that house is always styled Marquess of Douglas and Clydesdale. The Douglas and Hamilton lines became Douglas-Hamilton and, under Scots law, are barred from inheriting the title of chief of Clan Douglas due to the hyphenated surname. This similarly applies to the Douglas-Home family who joined their surnames in the nineteenth century. In 1689, James Douglas, Earl of Angus raised the Cameronian regiment (Earl of Angus's regiment). Although greatly outnumbered, the regiment managed to defeat a larger Jacobite force at the Battle of Dunkeld. The regiment was victorious under the command of Captain George Munro, 1st of Auchinbowie. 18th century