Duke of Devonshire a separate title from that of Earl of Devon, which still belongs to the Courtenay family. The fifth Duke and Duchess of Devonshire are portrayed in the 2008 film "The Duchess" directed by Saul Dibb. The film is based on Amanda Foreman's biography of the scandalous 18th-century English aristocrat Georgiana Cavendish, Duchess of Devonshire (portrayed by Keira Knightley) and her relationship with the Duke (Ralph Fiennes) and his next wife, Lady Elizabeth Foster. Along with Jane Austen, the fifth Duke and his second wife appear, soon after Georgiana's death, in "Jane and the Stillroom Maid", a murder mystery by Stephanie
Harriet Sutherland-Leveson-Gower, Duchess of Sutherland Harriet Sutherland-Leveson-Gower, Duchess of Sutherland Harriet Elizabeth Georgiana Sutherland-Leveson-Gower, Duchess of Sutherland (née Howard; 21 May 1806 – 27 October 1868), styled The Honourable Harriet Howard before her marriage, was Mistress of the Robes under several Whig administrations: 1837–1841, 1846–1852, 1853–1858, and 1859–1861; and was a great friend of Queen Victoria. She was an important figure in London's high society, and used her social position to undertake various philanthropic undertakings including the protest of the English ladies against American slavery. Harriet was the third daughter of George Howard, 6th Earl of Carlisle and his wife Lady Georgiana Cavendish, who was