Caroline Graham, Duchess of Montrose Caroline Graham, Duchess of Montrose Caroline Graham, Duchess of Montrose (10 August 1770 – 24 March 1847), formerly Lady Caroline Maria Montagu, was the second wife of James Graham, 3rd Duke of Montrose. She was the daughter of George Montagu, 4th Duke of Manchester, and his wife, the former Elizabeth Dashwood. She married Montrose on 24 July 1790, at Kensington Palace. He was fifteen years her senior, and had previously been married to Lady Jemima Elizabeth, daughter of John Ashburnham, 2nd Earl of Ashburnham; their only child had died in infancy. The duke and duchess had six children: The duke,
Prince William Frederick, Duke of Gloucester and Edinburgh the fourth daughter of George III. The marriage took place at St. James's Palace, London. On that day, The Prince Regent granted the Duke the style of "His Royal Highness" by Order in Council. The Duke and Duchess of Gloucester lived at Bagshot Park in Surrey. They had no children together; they had married when both were 40. The Duke had been encouraged to stay single, so that there might be a suitable groom for Princess Charlotte of Wales, the heiress to the throne, even if no foreign match proved suitable; she had married Prince Leopold of Saxe-Coburg ten weeks