Biography
William Cavendish, 7th Baron Cavendish, 4th Marquess of Hartington, 4th Duke of Devonshire, was born 8 May 1720 in Hardwick Hall, Derbyshire, England, United Kingdom to William Cavendish, 3rd Duke of Devonshire (1698-1755) and Catherine Hoskins (c1700-1777) and died 2 October 1764 Spa, Liège, Belgium of unspecified causes. He married Charlotte Elizabeth Boyle, 6th Baroness Clifford (1731-1754) 27 March 1748 in St James, Westminster, Greater London, England, United Kingdom.
Children
| Name | Birth | Death | Joined with |
| William Cavendish, 5th Duke of Devonshire (1748-1811) | 14 December 1748 | 29 July 1811 Piccadilly, London, England, United Kingdom | Georgiana Spencer (1757-1806) Elizabeth Christiana Hervey (1757-1824) |
| Dorothy Cavendish (1750-1794) | 27 August 1750 | 3 June 1794 Burlington House, Piccadilly, Greater London, England, United Kingdom | William Henry Bentinck, 3rd Duke of Portland (1738-1809) |
| Richard Cavendish (1751-1781) | 19 June 1751 Hardwick, Derbyshire, England, United Kingdom | 12 September 1781 Naples, Campania, Italy | |
| George Augustus Henry Cavendish, 1st Earl of Burlington (1754-1834) | 21 March 1754 | 4 May 1834 Burlington House, London, Greater London, England, United Kingdom | Elizabeth Compton (1760-1835) |
Footnotes (including sources)
| ‡ General |
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