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
Keira Knightley prior to being told by Maybury to sing live. Knightley initially felt embarrassed while singing live: "I was shaking like a leaf", but eventually went through with the plan. Upon release, the film became a moderate critical and commercial success. Knightley's performance and singing abilities were praised by such film citics as Ray Bennett who wrote; "the film belongs to the women, with Knightley going from strength to strength (and showing she can sing!)". Knightley then starred as the 18th-century English aristocrat Georgiana Cavendish, Duchess of Devonshire in Saul Dibb's widely praised period drama "The Duchess" (2008), based on the