| | William Cavendish 1748–1811 Georgiana Spencer 1757–1806 | | | | William Cavendish 4th Duke of Devonshire, KG, PC, Prime Minister of Great Britain (1756-1757) 1720–1764 | | | | William Cavendish 3rd Duke of Devonshire (1729-1755), KG, PC 1698–1755 | | | | William Cavendish 2nd Duke of Devonshire, KG, PC 1672–1729 |
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| | | John Spencer 1st Earl Spencer (1765-1783) 1734–1783 | | | | Hon. John Spencer MP 1708–1746 Georgiana Carolina Carteret 1716–1780 | | |
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