Princess Mary of Great Britain Princess Mary of Great Britain Princess Mary of Great Britain (5 March 1723 – 14 January 1772) was the second-youngest daughter of King George II of Great Britain and his wife Caroline of Ansbach, and Landgravine of Hesse-Kassel as the wife of Landgrave Frederick II. Princess Mary was born at Leicester House, Westminster, London. Her father was the Prince of Wales, later King George II. Her mother was Caroline of Ansbach, daughter of Johann Friedrich, Margrave of Brandenburg-Ansbach. Her father succeeded, as George II, on 11 June 1727, and she became "HRH The Princess Mary". Upon her death in 1737,
Caroline of Ansbach actions. Caroline had absorbed the liberal opinions of her mentor, Queen Sophia Charlotte of Prussia, and supported clemency for the Jacobites (supporters of the rival Stuart claim to the throne), freedom of the press, and freedom of speech in Parliament. Over the next few years, she and her husband fought a constant battle against their eldest son, Frederick, Prince of Wales, who had been left behind in Germany when they came to England. He joined the family in 1728, by which time he was an adult, had mistresses and debts, and was fond of gambling and practical jokes. He opposed