Princess Augusta of Hesse-Cassel (1797 - 1889), circa 1820. She became Duchess Of Cambridge after her marriage to Prince Adolphus, 1st Duke of Cambridge and son of King George III of Great Britain. (Photo by Hulton Archive/Getty Images)

Princess Augusta of Hesse-Cassel (1797 - 1889), circa 1820.  She became Duchess Of Cambridge after her marriage to Prince Adolphus, 1st Duke of Cambridge and son of King George III of Great Britain. (Photo by Hulton Archive/Getty Images)