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,
Sacha Hamilton, Duchess of Abercorn wife of George Mountbatten, 2nd Marquess of Milford Haven, elder maternal uncle of the Duke of Edinburgh. The Torby sisters were third cousins of the prince through their common ancestor, Tsar Nicholas I. The Duchess of Abercorn was a close friend of the Duke of Edinburgh, and her sister, the Duchess of Westminster, is a godmother of Prince William, Duke of Cambridge. The Duke of Abercorn was a first cousin of John, 8th Earl Spencer, father of Diana, Princess of Wales, through their mutual ancestor James Hamilton, 3rd Duke of Abercorn. She was the eldest daughter of Lt.-Col. Harold Pedro