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BiographyWilliam Cavendish, 4th Duke of Devonshire, Lord Cavendish, Marquess of Hartington, Duke of Devonshire, was born 8 May 1720 to William Cavendish, 3rd Duke of Devonshire (1698-1755) and Catherine Hoskins (c1700-1777) and died 2 October 1764 in Spa of unspecified causes. He married Charlotte Elizabeth Boyle, 6th Baroness Clifford (1731-1754) 27 March 1748 at St James in Westminster. Notable ancestors include Charlemagne (747-814), William I of England (1027-1087), Hugh Capet (c940-996), Alfred the Great (849-899), Rurik (c832-879), Henry II of England (1133-1189). Ancestors are from the United Kingdom, France, Germany, England, Russia, Ukraine, Spain, Portugal, Belgium, Ireland, Israel, Hungary, Byzantium, the Netherlands, Belarus, the Byzantine Empire, Italy.
|Offspring of William Cavendish, 3rd Duke of Devonshire and Catherine Hoskins (c1700-1777)|
|Caroline Cavendish (1719-1760)||22 May 1719||20 January 1760|| William Ponsonby, 2nd Earl of Bessborough (1704-1793)|
|William Cavendish, 4th Duke of Devonshire (1720-1764)||8 May 1720||2 October 1764 Spa|| Charlotte Elizabeth Boyle, 6th Baroness Clifford (1731-1754)|
|Elizabeth Cavendish (1723-1760)||24 April 1723||1760|| John Ponsonby (1713-1787)|
|Rachel Cavendish (1727-1805)||7 June 1727||7 May 1805 London, England, United Kingdom|| Horatio Walpole, 1st Earl of Orford (1723-1809)|
|George Augustus Cavendish (1728-1794)|| |
|Frederick Cavendish (1729-1803)|| |
|John Cavendish (1732-1796)|
|Offspring of William Cavendish, 4th Duke of Devonshire and Charlotte Elizabeth Boyle, 6th Baroness Clifford (1731-1754)|
|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 London|| William Henry Bentinck, 3rd Duke of Portland (1738-1809)|
|Richard Cavendish (1751-1781)|| |
|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)|