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 Sea from The Hague to Margate was the only sea voyage she took in her life. Their young son, Prince Frederick, remained in Hanover for the rest of George I's reign to be brought up by private tutors. On the accession of George I in 1714, Caroline's husband automatically became Duke of Cornwall and Duke of Rothesay. Shortly afterwards, he was invested as Prince of Wales, whereupon she became Princess of Wales. Caroline was the first woman to receive the title at the same time as her husband received his. She was the first Princess of Wales for over two