HomePeople Biography and filmographyDeborah Cavendish Biography unavailable on TMDB. Movies (3)TV shows (0) Movies (3) Outbreak 1939: When War Broke OutOutbreak 1939: When War Broke Out2009 The Jazz Baroness2009 · Self (as Duchess of Devonshire) The Banana1997 · Self - The Duchess of Devonshire TV shows (0) No credits available.