Deborah Cavendish, Duchess of Devonshire Deborah Cavendish, Duchess of Devonshire Deborah Vivien Cavendish, Duchess of Devonshire, (born Deborah Freeman-Mitford and latterly Deborah, Dowager Duchess of Devonshire; 31 March 1920 – 24 September 2014) was an English aristocrat, writer, memoirist and socialite. She was the youngest and last surviving of the six Mitford sisters, who were prominent members of English society in the 1930s and 1940s. Known to her family as "Debo", Deborah Mitford was born in Asthall Manor, Oxfordshire, England. Her parents were David Freeman-Mitford, 2nd Baron Redesdale (1878–1958), son of Algernon Freeman-Mitford, 1st Baron Redesdale, and his wife, Sydney (1880–1963), daughter of Thomas Gibson
They Were Sisters from the immediate aftermath of World War I through to the late 1930s. The screenplay was developed by Pertwee from a popular novel of the same name by Dorothy Whipple, published in 1943. "They Were Sisters" features the spouses of both Mason and Calvert; Pamela Mason (billed under her maiden name Pamela Kellino, and playing Mason's daughter despite being only seven years younger) and Peter Murray-Hill. Mason later admitted that he acted most of his bullying, sadistic role with effectively an ongoing hangover as a means of dealing with the frustration he felt from his role and the British film