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,
Dorothea Friederike of Brandenburg-Ansbach Prince Louis VIII of Hesse-Darmstadt (1691–1768). Friederike Dorothea died on 13 March 1731 and was buried on 17 or 25 March 1731 in the family vault of the Hanau counts in the St. John's Church (Hanau) (currently known as Old St. John's Church) in Hanau. The tomb was largely destroyed in the bombing of the Second World War. Dorothea Friederike of Brandenburg-Ansbach Dorothea Friederike of Brandenburg-Ansbach (12 August 1676 – 13 March 1731) was the daughter of Margrave John Frederick of Brandenburg-Ansbach (1654–1686) and his first wife, Margravine Johanna Elisabeth of Baden-Durlach (1651–1680). She was a half-sister of Queen Caroline