- Deceased in 1796
Parents
- William, 3ème duc de Devonshire, CAVENDISH, duc de Devonshire 1698-1755
- Catherine HOSKINS †1777
Spouses, children, grandchildren and great-grandchildren
- Married in 1743 to John PONSONBY, born in 1713, deceased in 1787 aged 74 years old, Speaker de la Chambre des Communes(Parents :
Brabazon,1er comte de Bessborough PONSONBY, comte de Bessborough 1679-1758 & 
Sarah MARGETSON †1733)with- William Brabazon, 1er lord Ponsonby of Imokilly, PONSONBY, baron Ponsonby of Imokilly 1744-1806 Married toLouisa MOLESWORTH 1749-1824 with
- John, vicomte Ponsonby of Imokilly, PONSONBY, vicomte Ponsonby of Imokilly ca 1770-1855 Married in 1803 toElizabeth Frances VILLIERS 1786-1866
- William PONSONBY 1772-1815 Married in 1807 toGeorgiana FITZROY †1835 with :
- Mary Elizabeth PONSONBY †1838
- Charlotte PONSONBY †1883
- William, 3ème lord Ponsonby of Imokilly, PONSONBY, baron Ponsonby of Imokilly 1816-1861
- Richard, évêque de Raphoe, PONSONBY †1853 Married in 1804 toFrances STAPLES with :
- William, 4ème lord Ponsonby of Imokilly, PONSONBY, baron Ponsonby of Imokilly 1807-1866
- George of Woodbeding PONSONBY †1863 Married in 1812 toDiana BOUVERIE
- Mary Elizabeth PONSONBY †1861 Married in 1794 toCharles, 2ème comte Grey, GREY, comte Grey 1764-1845 with :
- Henry, 3ème comte Grey, GREY, comte Grey 1802-1894
- Louisa GREY †1841
- Caroline GREY †1875
- Charles GREY 1804-1870
- George GREY 1809-1891
- Francis Richard GREY 1813-1890
- Elizabeth GREY 1815-1880
- Mary GREY †1884
- Catherine PONSONBY 1746-1827 Married in 1763 toRichard, 2ème comte de Shannon, BOYLE, comte de Shannon 1727-1807 with
- Catherine BOYLE 1768-1815 Married in 1784 toFrancis, 1er comte de Bandon, BERNARD, comte de Bandon 1755-1830 with :
- James, 2ème comte de Bandon, BERNARD, comte de Bandon 1785-1856
- Charlotte BERNARD 1794-1846
- Henry, 3ème comte de Shannon, BOYLE, comte de Shannon 1771-1842 Married in 1798 toSarah HYDE 1780-1820 with :
- Richard, 4ème comte de Shannon, BOYLE, comte de Shannon 1809-1868
- George PONSONBY 1755-1817 Married toMary BUTLER with
- Elizabeth PONSONBY †1849 Married in 1803 toFrancis PRITTIE with :
- Henry, 3ème lord Dunalley PRITTIE 1807-1885
- Frances PRITTIE †1901
- Frances PONSONBY 1757-1827 Married in 1774 toCornelius, 1er lord Lismore, O'CALLAGHAN, baron Lismore 1742-1797 with
- Cornelius, 1er vicomte Lismore, O'CALLAGHAN, vicomte Lismore 1775-1857 Married in 1808 toEleanor BUTLER †1859 with :
- Anne Maria O'CALLAGHAN
- George, 2ème vicomte Lismore, O'CALLAGHAN, vicomte Lismore 1815-1898
- Louisa O'CALLAGHAN †1863 Married in 1807 toWilliam CAVENDISH 1783-1812 with :
- William, 7ème duc de Devonshire, CAVENDISH, duc de Devonshire 1808-1891
- George CAVENDISH 1810-1880
- Fanny CAVENDISH †1885
- Elizabeth O'CALLAGHAN 1784-1824 Married in 1801 toJohn of Castle Hyde & Creg HYDE †1832
Siblings
- Caroline CAVENDISH 1719-1760
- William, 4ème duc de Devonshire, CAVENDISH, duc de Devonshire 1720-1764
- Frederick CAVENDISH, maréchal de Grande-Bretagne 1729-1803
- Rachel CAVENDISH †1805
- Elizabeth CAVENDISH †1796
Photos and archival records
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