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
Georgiana Cavendish, Duchess of Devonshire after her death, the Duke of Devonshire discovered the extent of her debts - the duchess died owing an estimated 2008 equivalent of £3,720,000 - and remarked, "Is that all?..." He soon enough married Lady Elizabeth Foster who, as his second wife, became Duchess of Devonshire. Georgiana's children were discontented with the marriage as they never liked Lady Elizabeth at all (something which caused dismay with their mother when she was alive). When William Cavendish, 5th Duke of Devonshire, died on 29 July 1811, the Marquess of Hartington became 6th Duke of Devonshire. He sought to liquidate his late mother's