William CAVENDISH, 3rd Duke of Devonshire
1698 - 1755 (57 years)(
= Descendancy chart to this point, 
= Expand, 
= Collapse)
- 1 William CAVENDISH, 3rd Duke of Devonshire [1] b. 26 Sep 1698 d. 5 Dec 1755
- Catherine HOSKINS, Duchess of Devonshire b. 1700 d. 8 May 1777
- 2 Lady Caroline CAVENDISH, Countess of Bessborough [1.1] b. 22 May 1719 d. 20 Jan 1760
- William PONSONBY, 2nd Earl of Bessborough b. 1704 d. 11 Mar 1793
- 3 Lady Catherine PONSONBY [1.1.1] b. 14 Oct 1742 d. 4 Sep 1789
- Aubrey BEAUCLERK, 5th Duke of St. Albans b. 3 Jun 1740 d. 9 Feb 1802
- 4 Aubrey BEAUCLERK, 6th Duke of St. Albans [1.1.1.1] b. 21 Aug 1765 d. 12 Aug 1815
[ =>]
- 4 William BEAUCLERK, 8th Duke of St. Albans [1.1.1.2] b. 18 Dec 1766 d. 17 Jul 1825
[ =>]
- 4 Lady Catherine Elizabeth BEAUCLERK [1.1.1.3] b. Abt 1768 d. 1803
- 4 Admiral Lord Amelius BEAUCLERK [1.1.1.4] b. 23 May 1771 d. 10 Dec 1846
- 4 The Reverend Lord Frederick BEAUCLERK [1.1.1.5] b. 8 May 1773 d. 22 Apr 1850
[ =>]
- 4 Lady Caroline BEAUCLERK [1.1.1.6] b. Abt 1775 d. 1838
[ =>]
- 4 Lady Georgiana BEAUCLERK [1.1.1.7] b. 1776 d. 1791
- 4 Aubrey BEAUCLERK, 6th Duke of St. Albans [1.1.1.1]
- 3 Lady Charlotte PONSONBY [1.1.2] b. 1747
- 3 Frederick PONSONBY, 3rd Earl of Bessborough [1.1.3] b. 24 Jan 1758 d. 3 Feb 1844
- Lady Henrietta SPENCER, Countess of Bessborough b. 16 Jun 1761 d. 11 Nov 1821
- 4 Viscount Duncannon from 1793 to 1844 Lord John William PONSONBY, 4th Earl of Bessborough [1.1.3.1] b. 31 Aug 1781 d. 16 May 1847
[ =>]
- 4 Hon. Major General Sir Frederick Cavendish PONSONBY [1.1.3.2] b. 6 Jul 1783 d. 11 Jan 1837
[ =>]
- 4 the Honourable Caroline Ponsonby Lady Caroline PONSONBY [1.1.3.3] b. 13 Nov 1785 d. 25 Jan 1828
[ =>]
- 4 William Francis Spencer PONSONBY, 1st Baron de Mauley [1.1.3.4] b. 31 Jul 1787 d. 16 May 1855
[ =>]
- 4 Viscount Duncannon from 1793 to 1844 Lord John William PONSONBY, 4th Earl of Bessborough [1.1.3.1]
- 3 Lady Catherine PONSONBY [1.1.1]
- 2 William CAVENDISH, Marquess of Hartington, later 4th Duke of Devonshire, Prime Minister of Great Britain [1.2] b. 8 May 1720 d. 2 Oct 1764
- Lady Charlotte Elizabeth BOYLE, Marchioness of Hartington, 6th Baroness Clifford b. 27 Oct 1731 d. 8 Dec 1754
- 3 William CAVENDISH, 5th Duke of Devonshire, 7th Baron Clifford [1.2.1] b. 14 Dec 1748 d. 29 Jul 1811
- Lady Georgiana SPENCER, Duchess of Devonshire b. 7 Jun 1757 d. 30 Mar 1806
- 4 Georgiana Dorothy CAVENDISH, Countess of Carlisle [1.2.1.1] b. 12 Jul 1783 d. 8 Aug 1858
[ =>]
- 4 Lady Henrietta Elizabeth CAVENDISH [1.2.1.2] b. 29 Aug 1785 d. 25 Nov 1862
[ =>]
- 4 William Spencer CAVENDISH, 6th Duke of Devonshire [1.2.1.3] b. 21 May 1790 d. 18 Jan 1858
- 4 Lady Georgiana Dorothy CAVENDISH, Countess of Carlisle [1.2.1.4] b. 12 Jul 1783 d. 8 Aug 1858
- 4 Georgiana Dorothy CAVENDISH, Countess of Carlisle [1.2.1.1]
- Lady Elizabeth HERVEY, Duchess of Devonshire b. 13 May 1758 d. 30 Mar 1824
- 4 Sir Augustus Clifford Sir Augustus William James CLIFFORD [1.2.1.5] b. 26 May 1788 d. 8 Feb 1877
[ =>]
- 4 Sir Augustus Clifford Sir Augustus William James CLIFFORD [1.2.1.5]
- 3 Dorothy CAVENDISH, Duchess of Portland [1.2.2] b. 27 Aug 1750 d. 3 Jun 1794
- William Henry CAVENDISH-BENTINCK, 3rd Duke of Portland b. 14 Apr 1738 d. 30 Oct 1809
- 4 William Henry CAVENDISH-SCOTT-BENTINCK, 4th Duke of Portland [1.2.2.1] b. 24 Jun 1768 d. 27 Mar 1854
[ =>]
- 4 The Right Hon. Lord Charles William Cavendish BENTINCK [1.2.2.2] b. 1 Jul 1770 d. 24 Jul 1770
- 4 Unnamed son CAVENDISH-BENTINCK [1.2.2.3] b. 25 Aug 1771
- 4 Lieutenant General the Right Honourable Lord William Henry CAVENDISH-BENTINCK [1.2.2.4] b. 14 Sep 1774 d. 17 Jun 1839
- 4 Lady Charlotte CAVENDISH-BENTINCK [1.2.2.5] b. 3 Oct 1775 d. 28 Jul 1862
[ =>]
- 4 Lady Mary CAVENDISH-BENTINCK [1.2.2.6] b. 13 Mar 1778 d. 6 Nov 1843
- 4 Lieutenant-Colonel The Right Honourable Lord William Charles Augustus CAVENDISH-BENTINCK [1.2.2.7] b. 3 Oct 1780 d. 28 Apr 1826
[ =>]
- 4 Lord Frederick CAVENDISH-BENTINCK [1.2.2.8] b. 2 Nov 1781 d. 11 Feb 1828
[ =>]
- 4 a stillborn baby CAVENDISH-BENTINCK [1.2.2.9] b. 20 Oct 1786
- 4 William Henry CAVENDISH-SCOTT-BENTINCK, 4th Duke of Portland [1.2.2.1]
- 3 Lord Richard CAVENDISH [1.2.3] b. 19 Jun 1752 d. 7 Sep 1781
- 3 Lord George Augustus Henry CAVENDISH, 1st Earl of Burlington [1.2.4] b. 31 Mar 1754 d. 9 May 1834
- Lady Elizabeth COMPTON
- 4 William CAVENDISH [1.2.4.1] b. 10 Jan 1783 d. 17 Jan 1812
[ =>]
- 4 George CAVENDISH [1.2.4.2] b. 14 Oct 1784 d. 22 Jan 1809
- 4 Elizabeth Dorothy CAVENDISH [1.2.4.3] b. 12 Jun 1786 d. 17 Sep 1786
- 4 Lady Anne CAVENDISH [1.2.4.4] b. 11 Nov 1787 d. 17 May 1871
- 4 Gen. The Hon. Henry CAVENDISH [1.2.4.5] b. 5 Nov 1789 d. 5 Apr 1873
[ =>]
- 4 Elizabeth CAVENDISH [1.2.4.6] b. 13 Mar 1792 d. 26 May 1794
- 4 Charles Compton CAVENDISH, 1st Baron Chesham [1.2.4.7] b. 28 Aug 1793 d. 10 Nov 1863
[ =>]
- 4 Mary CAVENDISH [1.2.4.8] b. 6 Mar 1795 d. 7 Jun 1795
- 4 Lady Caroline CAVENDISH [1.2.4.9] b. 5 Apr 1797 d. 9 Jan 1867
- 4 Frederick CAVENDISH [1.2.4.10] b. 28 Oct 1801 d. 27 Jan 1802
- 4 Charlotte CAVENDISH [1.2.4.11] b. 23 Apr 1803 d. 1 Jul 1803
- 4 William CAVENDISH [1.2.4.1]
- 3 William CAVENDISH, 5th Duke of Devonshire, 7th Baron Clifford [1.2.1]
- 2 Lord George Augustus CAVENDISH [1.3] b. Abt 1727 d. 2 May 1794
- 2 Lady Elizabeth CAVENDISH [1.4] b. Bef 1727 d. 1796
- John PONSONBY b. 29 Mar 1713 d. 16 Aug 1787
- 3 Frances PONSONBY [1.4.1]
- Cornelius O'CALLAGHAN, 1st Baron Lismore
- 4 Honourable Louisa O'CALLAGHAN [1.4.1.1] d. 1863
[ =>]
- 4 Honourable Louisa O'CALLAGHAN [1.4.1.1]
- 3 William PONSONBY, 1st Baron Ponsonby of Imokilly [1.4.2]
- 3 George PONSONBY [1.4.3]
- 3 Catherine PONSONBY [1.4.4]
- 3 Frances PONSONBY [1.4.1]
- 2 Lady Rachel CAVENDISH [1.5] b. 7 Jun 1727 d. 8 May 1805
- Horatio WALPOLE, 1st Earl of Orford b. 12 Jun 1723 d. 24 Feb 1809
- 3 Horatio WALPOLE [1.5.1]
- 3 Lady Mary WALPOLE [1.5.2] b. Abt 1757
- 3 the Honourable George WALPOLE [1.5.3] b. 20 Jun 1758 d. May 1835
- 3 Horatio WALPOLE [1.5.1]
- 2 Field Marshal Lord Frederick CAVENDISH [1.6] b. Aug 1729 d. 21 Oct 1803
- 2 Lord John CAVENDISH [1.7] b. 22 Oct 1732 d. 18 Dec 1796
- 2 Lady Caroline CAVENDISH, Countess of Bessborough [1.1]