Lady Diana Cooper, née Manners (1892–1986), a British aristocrat and actress, was one of the most famous society leaders in Britain in the early 20th century. Born Lady Diana Olivia Winifred Maud Manners, she was officially the youngest daughter of the 8th Duke of Rutland and his wife, the former Violet Lindsay, but Lady Diana's biological father was widely supposed to be the writer Henry Cust.
