Biography
Dorothy Cavendish was born 27 August 1750 to William Cavendish, 4th Duke of Devonshire (1720-1764) and Charlotte Elizabeth Boyle, 6th Baroness Clifford (1731-1754) and died 3 June 1794 Burlington House, Piccadilly, Greater London, England, United Kingdom of mortification of the bowels. She married William Henry Bentinck, 3rd Duke of Portland (1738-1809) 8 November 1766 in Burlington House, London, Greater London, England.
Children
| Name | Birth | Death | Joined with |
| William Henry Cavendish-Bentinck, 4th Duke of Portland (1768-1854) | 24 June 1768 Welbeck Abbey, Nottinghamshire, England, United Kingdom | 27 March 1854 Welbeck Abbey, Nottinghamshire, England, United Kingdom | Henrietta Scott (1774-1844) |
| William Henry Cavendish-Bentinck (1774-1839) | |||
| Charlotte Cavendish-Bentinck (1775-1862) | 3 October 1775 | 28 July 1862 | Charles Greville (1762-1832) |
| Mary Cavendish-Bentinck (1778-) | |||
| William Charles Augustus Cavendish-Bentinck (1780-1826) | 3 October 1780 Welbeck Abbey, Nottinghamshire, England, United Kingdom | 28 April 1826 Park Lane, Greater London, England, United Kingdom | Georgiana Augusta Frederica Seymour (c1787-1813) Anne Wellesley (1788-1875) |
| Frederick Cavendish-Bentinck (1781-1828) | |||
Footnotes (including sources)
| ‡ General |
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