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 Caroline and Walpole governed her husband. Peter Quennell wrote that Hervey was the "chronicler of this remarkable coalition" and that she was Hervey's "heroine". Using such sources, biographers of the nineteenth and twentieth centuries credit her with aiding the establishment of the House of Hanover in Britain, in the face of Jacobite opposition. R. L. Arkell wrote "by her acumen and geniality, [Caroline] ensured the dynasty's rooting itself in England", and W. H. Wilkins said her "gracious and dignified personality, her lofty ideals and pure life did much to counteract the unpopularity of her husband and father-in-law, and redeem the