Princess Mary of Great Britain was the second-youngest daughter of King George II and Landgravine of Hesse-Kassel as the wife of Landgrave Frederick World War II
Background
Princess Mary was born at Leicester House, Westminster, London. Her father was the Prince of Wales, later King George World War 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 His Royal Highness The Princess Mary.
Career
Titles and styles 5 March 1723 – 11 June 1727: Her Royal Highness Princess Mary 11 June 1727 – 8 May 1740: Her Royal Highness The Princess Mary 8 May 1740 – 25 March 1751: Her Royal Highness Princess Frederick of Hesse-Kassel 25 March 1751 - 1 February 1760: Her Royal Highness The Hereditary Princess of Hesse-Kassel 1 February 1760 – 14 January 1772: Her Royal Highness The Landgravine of Hesse-Kassel Arms On 30 August 1727, as a child of the sovereign, Mary was granted use of the arms of the realm, differenced by a label argent of three points, each bearing a canton gules.