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,
Susan Spencer-Churchill, Duchess of Marlborough father, George Spencer, 4th Duke of Marlborough, at which point his wife became Duchess of Marlborough. The duchess died at her house in Park Lane, London, aged 73. In the previous year two of her sons, Charles and Henry John, had died, along with Charles's wife and her husband the duke himself. She was buried in the chapel of Blenheim Palace. Susan Spencer-Churchill, Duchess of Marlborough Susan Spencer-Churchill, Duchess of Marlborough (10 April 1767 – 2 April 1841), formerly Lady Susan Stewart, was the wife of George Spencer-Churchill, 5th Duke of Marlborough. Lady Susan Stewart was the daughter of John