William Montagu, 5th Duke of Manchester British colonial administrator (1771-1843) (1771–1843) Parents Elizabeth Montagu, Duchess of Manchester George Montagu, 4th Duke of Manchester Children Lady Georgiana Montagu Lady Jane Montagu Lady Emily Montagu Lady Elizabeth Montagu Lady Susan Montagu Caroline Calcraft Lord William Francis Montagu George Montagu, 6th Duke of Manchester Siblings Lord Frederick Montagu Lady Emily Montagu Lord George Montagu Caroline Graham, Duchess of Montrose Lady Ana Marie Montagu Partners Susan Montagu, Duchess of Manchester