Please answer the following question: Facts: - caption: portrait by allan warren - office: minister of state for commonwealth relations - term end: 1964 - term start: 1962 - name: the duke of devonshire - image: 11th duke of devonshire allan warren.jpg Based on these bullet points, write a short biography describing the life of andrew cavendish , 11th duke of devonshire .
A:
andrew robert buxton cavendish , 11th duke of devonshire -lrb- 2 january 1920 -- 3 may 2004 -rrb- , styled lord andrew cavendish until 1944 and marquess of hartington from 1944 to 1950 , was a british conservative and later social democratic party politician .he was a minister in the government of prime minister harold macmillan -lrb- who was married to his aunt -rrb- , but is best known for opening chatsworth house to the public .