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 and as queen, Caroline was known for her political influence, which she exercised through and for Walpole. Her tenure included four regencies during her husband's stays in Hanover, and she is credited with strengthening the House of Hanover's place in Britain during a period of political instability. Caroline was widely mourned following her death in 1737, not only by the public but also by the King, who refused to remarry. Caroline was born on 1 March 1683 at Ansbach, the daughter of John Frederick, Margrave of Brandenburg-Ansbach, and his second wife, Princess Eleonore Erdmuthe of Saxe-Eisenach. Her father was the