Peregrine Andrew Morny Cavendish, 12th Duke of Devonshire KCVO, CBE (called "Stoker," born 27 April 1944) is a British peer. He is the only surviving son of Andrew Cavendish, 11th Duke of Devonshire and his wife, the former Deborah Mitford. He succeeded to the dukedom following the death of his father on 3 May 2004. Prior to this succession, he was styled Marquess of Hartington. The duke is worth an estimated £800m.