Parliament on 11 December 1543, leading to eight years of Anglo-Scottish conflict known as the Rough Wooing. In 1543 Beaton regained power, having earlier drawn up the Secret Bond. Two English invasions followed – and for these many blamed Beaton. In December 1545 Beaton arranged for the arrest, trial and execution of Protestant preacher George Wishart, who on 28 March 1546 was strangled and afterwards burned. Wishart had many sympathisers, and this led to the assassination of the Cardinal soon afterwards. Death Plots against Cardinal Beaton had begun circulating as early as 1544. The conspirators were led by Norman Leslie, master of Rothes, and William Kirkcaldy of Grange. The Leslies had suffered from the expansion of Beaton's interest in Fife; while Kirkcaldy's uncle, James Kirkcaldy of Grange, held Protestant sympathies and had been removed in 1543 as treasurer of the realm, through Beaton's influence. They were joined by John Leslie of Parkhill, one of the Fife lairds angered at the murder of Wishart. Leslie and Kirkcaldy managed to obtain admission to St Andrews Castle at daybreak of 29 May 1546, killing the porter in the process. They then murdered the cardinal, mutilating the corpse and hanging it from a castle window. At the time it was widely believed that his death was in the interests of Henry VIII of England, who regarded Beaton as the chief obstacle to his policy in Scotland; the cardinal's murder was certainly a significant point in the eventual triumph of Protestantism north of the Border. At the time of his death, Beaton was Lord Chancellor of Scotland, Archbishop of St Andrews, and Cardinal Legate in Scotland. He was succeeded as Archbishop of Saint Andrews by Dr. John Hamilton. Marion Ogilvy Beaton's mistress, Marion Ogilvy, was born in 1500, the youngest daughter of James Ogilvy, 1st Lord Ogilvy of Airlie. After the deaths of her parents, she managed the family estates in Angus. Around 1520 she met and fell in love with David Beaton. They lived in Ethie Castle and produced eight children. According to Margaret H.B. Sanderson, their relationship, which appeared little different from marriage, offended those who wanted serious reform of the church, and who deplored the double standard by which prelates punished those who advocated the marriage of the clergy yet lived in open concubinage in violation of the rule of clerical celibacy. Cardinal Beaton's oldest surviving son, David Beaton of Melgund, became