His Grace William CAVENDISH, 4th Duke of Devonshire, KG, PC
1720 - 1764 (44 years)
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| Lady Georgiana HOWARD, 1st Baroness Dover | |
| B: | 1804 |
| Castle Howard, Ryedale, Yorkshire, England | |
| D: | 17 Mar 1860 |
| Westminster, London, Middlesex, England | |
| George James Welbore AGAR-ELLIS, 1st Baron Dover | |
| B: | 14 Jan 1797 |
| Mayfair, Westminster, London, England | |
| D: | 10 Jul 1833 |
| Westminster, London, Middlesex, England | |
 | Blanche Georgiana HOWARD 1812-1840 |
| Blanche Georgiana HOWARD | |
| B: | 11 Jan 1812 |
| Castle Howard, Ryedale, Yorkshire, England | |
| D: | 27 Apr 1840 |
| His Grace William CAVENDISH, 7th Duke of Devonshire, KG, PC | |
| B: | 27 Apr 1808 |
| D: | 21 Dec 1891 |
| Lady Georgiana Dorothy CAVENDISH, Countess of Carlisle | |
| B: | 12 Jul 1783 |
| Picadilly, London, Middlesex, England | |
| D: | 8 Aug 1858 |
| Chiswick, London, Middlesex, England | |
| Rt. Hon. Sir George HOWARD, 6th Earl of Carlisle, KG, PC, FRS | |
| B: | 17 Sep 1773 |
| London, Middlesex, England | |
| D: | 7 Oct 1848 |
| Castle Howard, Ryedale, Yorkshire, England | |
| His Grace Sir William CAVENDISH, 5th Duke of Devonshire, KG | |
| B: | 14 Dec 1748 |
| D: | 28 Jul 1811 |
| Georgiana SPENCER, Duchess of Devonshire 1757-1806 |
| Georgiana SPENCER, Duchess of Devonshire | |
| B: | 7 Jun 1757 |
| D: | 1806 |
| Elizabeth Christiana HERVEY 1758-1824 |
| Elizabeth Christiana HERVEY | |
| B: | 13 May 1758 |
| D: | 30 Mar 1824 |
| Her Grace Dorothy CAVENDISH, Duchess of Portland | |
| B: | 27 Aug 1750 |
| D: | 3 Jun 1794 |
| William Henry Cavendish CAVENDISH-BENTINCK, 3rd Duke of Portland, KG, PC, FRS | |
| B: | 14 Apr 1738 |
| D: | 30 Oct 1809 |
| Lord Richard CAVENDISH 1752-1781 |
| Lord Richard CAVENDISH | |
| B: | 9 Jun 1752 |
| D: | 7 Sep 1781 |
| His Grace William CAVENDISH, 7th Duke of Devonshire, KG, PC | |
| B: | 27 Apr 1808 |
| D: | 21 Dec 1891 |
| Blanche Georgiana HOWARD 1812-1840 |
| Blanche Georgiana HOWARD | |
| B: | 11 Jan 1812 |
| Castle Howard, Ryedale, Yorkshire, England | |
| D: | 27 Apr 1840 |
| Hon. William CAVENDISH, MP 1783-1812 |
| Hon. William CAVENDISH, MP | |
| B: | 10 Jan 1783 |
| D: | 14 Jan 1812 |
| Cumbria, England | |
| Louisa O'CALLAGHAN -1863 |
| Louisa O'CALLAGHAN | |
| M: | 18 Jul 1807 |
| D: | 1863 |
| Rt. Hon. George Augustus Henry CAVENDISH, 1st Earl of Burlington | |
| B: | 31 Mar 1754 |
| D: | 9 May 1834 |
| Lady Elizabeth COMPTON | |
| M: | 27 Feb 1782 |
| London, Middlesex, England | |
|
| His Grace William CAVENDISH, 4th Duke of Devonshire, KG, PC | |
| B: | 8 May 1720 |
| D: | 2 Oct 1764 |
| Rt. Hon. Lady Charlotte Elizabeth BOYLE, Marchioness of Hartington, 6th Baroness Clifford | |
| B: | 27 Oct 1731 |
| D: | 8 Dec 1754 |
