Princess Augusta, Duchess of Cambridge, 1818. Princess Augusta of Hesse-Kassel (1797-1889) married Prince Adolphus, Duke of Cambridge, the seventh son of King George III of Great Britain, in 1818. She was the grandmother of Mary of Teck, Queen Consort of George V. (Photo by The Print Collector/Print Collector/Getty Images)

Princess Augusta, Duchess of Cambridge, 1818. Princess Augusta of Hesse-Kassel (1797-1889) married Prince Adolphus, Duke of Cambridge, the seventh son of King George III of Great Britain, in 1818. She was the grandmother of Mary of Teck, Queen Consort of George V. (Photo by The Print Collector/Print Collector/Getty Images)