Deborah Cavendish, Duchess of Devonshire

Her Grace The Duchess of Devonshire DCVO
Deborah Mitford in 1938
Tenure	26 November 1950 – 3 May 2004
Born	Deborah Vivien Freeman-Mitford (1920-03-31)31 March 1920 London, England
Died	24 September 2014(2014-09-24) (aged 94) Edensor, Derbyshire, England
Residence	Edensor House, Chatsworth Estate
Noble family	Mitford family
Spouse(s)	Andrew Cavendish, 11th Duke of Devonshire ​ ​ (m. 1941; died 2004)​
Issue	7, including Peregrine Cavendish, 12th Duke of Devonshire and Lady Sophia Topley
Parents	David Freeman-Mitford, 2nd Baron Redesdale Sydney Bowles
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Occupation	Writer, memoirist, socialite

Deborah Vivien Cavendish, Duchess of Devonshire, DCVO (born Deborah Vivien 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 British society in the 1930s and 1940s.