BiographyDorothy 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 in 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. Notable ancestors include Charlemagne (747-814), William I of England (1027-1087), Hugh Capet (c940-996), Alfred the Great (849-899), Henry II of England (1133-1189). Ancestors are from the United Kingdom, France, Germany, England, Russia, Ukraine, Spain, Portugal, Belgium, Ireland, Israel, Hungary, the Netherlands, Italy, Turkey, the Byzantine Empire, Sweden, Belarus, Switzerland, the Czech Republic, Canaan.
|Offspring of William Henry Bentinck, 3rd Duke of Portland and Dorothy Cavendish (1750-1794)|
|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|| Georgiana Augusta Frederica Seymour (c1787-1813)|
Anne Wellesley (c1788-1875)
|Frederick Cavendish-Bentinck (1781-1828)|
Common ancestors of Dorothy Cavendish (1750-1794) and William Henry Bentinck, 3rd Duke of Portland (1738-1809)
- Baptist Noel, 3rd Viscount Campden (c1611-1682)
- Hester Wotton (1615-aft1646)
- Thomas Wriothesley, 4th Earl of Southampton (1607-1667)
Noteworthy descendants include
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