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 ugly little she-mouse" rather than a "large, fat, healthy boy" as the pitiful nature of the baby made a supposititious child unlikely. The circumstances of the birth deepened the estrangement between mother and son. According to Lord Hervey, she once remarked after seeing Frederick, "Look, there he goes—that wretch!—that villain!—I wish the ground would open this moment and sink the monster to the lowest hole in hell!" In the final years of her life, Caroline was troubled by gout in her feet, but more seriously she had suffered an umbilical hernia at the birth of her final child in 1724.