Dorothy Bentinck, Duchess of Portland, Date of Birth, Date of Death
TweetDorothy Bentinck, Duchess of Portland
18th-century English noblewoman
Date of Birth: 
About Dorothy Bentinck, Duchess of Portland
- Dorothy Bentinck, Duchess of Portland (née Lady Dorothy Cavendish; 27 August 1750 – 3 June 1794) was Duchess of Portland as wife of William Cavendish-Bentinck, 3rd Duke of Portland, the Prime Minister of Great Britain.
- She is also a great-great-great-grandmother of Queen Elizabeth II through the queen's maternal grandmother.
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