Excellent as the King's domestic life was, he did not escape the family discomforts which so constantly attended the house of Hanover. Two of his brothers gave him much displeasure by their marriages. The Duke of Cumberland,[10] a man of libertine life, after scandalizing the world by appearing as defendant in a case of criminal conversation, married Mrs. Horton, a sister of that Colonel Luttrell who had been forced upon the electors of Middlesex; while the Duke of Gloucester now declared his marriage with Lady Waldegrave, an illegitimate daughter of Sir Edward Walpole. To guard against such marriages in future, the Royal Marriage Bill was passed, which forbids any member of the Royal Family, unless children of princesses married abroad, to marry before the age of twenty-five without the King's consent. After that age they must give a twelvemonth's notice of their intended marriage, which may be completed unless it be petitioned against by both Houses of Parliament. A more real disgrace than these marriages was the fate of George's sister, Caroline Matilda, Queen of Denmark. Her husband was a disgusting and licentious sot, whose villanous conduct so changed her naturally good disposition, that it was not found difficult for her enemies to gain credence for a story which connected her name in a disreputable manner with a certain Struensee, at that time favourite and Prime Minister in Denmark. This man, a physician by profession, had acquired absolute control over the King's mind, and had speedily risen to power. His enemies were of course numerous, and the opportunity offered them by the Queen's conduct only too favourable. Struensee and the Queen were suddenly apprehended by night, and the Queen, after some remonstrance from King George, allowed to retire to Zell, where she died after a few years, protesting her innocence. Struensee, however, was executed, and confessed the crime with which he and the Queen were charged. [Sidenote: Division of Poland.] [Sidenote: Constitution of Poland.] [Sidenote: Its peculiar institutions.] [Sidenote: Treaty of Partition.] [Sidenote: Balance of Power.]