William (1st Viscount Duncannon) Ponsonby
1659 - 1724 (65 years)
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| Frederich (3rd Earl of Bessborough) Ponsonby | |
| B: | 24 Jan 1758 |
| D: | 3 Feb 1844 |
| Henrietta Frances (Countess) Spencer | |
| D: | 14 Nov 1821 |
 | Charlotte (of Bessborough) Ponsonby -Yes, date unknown |
| Charlotte (of Bessborough) Ponsonby | |
| D: | Yes, date unknown |
| William 4th Earl Fitzwilliam 1748-Yes, date unknown |
| William 4th Earl Fitzwilliam | |
| B: | 30 May 1748 |
| D: | Yes, date unknown |
| Catherine (of Bessborough) Ponsonby | |
| D: | 4 Sep 1789 |
| Aubrey (5th Duke of St Albans) Beauclerk 1740-1802 |
| Aubrey (5th Duke of St Albans) Beauclerk | |
| B: | 3 Jun 1740 |
| M: | 4 May 1763 |
| D: | 9 Feb 1802 |
| William (2nd Earl of Bessborough) Ponsonby | |
| B: | 1704 |
| D: | 11 Mar 1793 |
| Caroline (of Devonshire) Cavendish 1719-1760 |
| Caroline (of Devonshire) Cavendish | |
| B: | 22 May 1719 |
| Hardwick, Derbyshire, England | |
| M: | 5 Jul 1739 |
| D: | 20 Jan 1760 |
| Derby, Derbyshire, England | |
| William Brabazon (of Imokilly) 1st Baron Ponsonby | |
| B: | 15 Sep 1744 |
| D: | 5 Nov 1806 |
| Louisa Molesworth -Yes, date unknown |
| Louisa Molesworth | |
| M: | 26 Dec 1769 |
| D: | Yes, date unknown |
| Frances Ponsonby 1757-Yes, date unknown |
| Frances Ponsonby | |
| B: | 18 Feb 1757 |
| D: | Yes, date unknown |
| Cornelius (1st Baron Lismore Shanbally) O'callaghan | |
| B: | 7 Jan 1740 |
| M: | 25 May 1827 |
| D: | 12 Jul 1797 |
| John (Rt Hon) Ponsonby -1789 |
| John (Rt Hon) Ponsonby | |
| D: | 12 Dec 1789 |
| Elizabeth (of Devonshire) Cavendish -Yes, date unknown |
| Elizabeth (of Devonshire) Cavendish | |
| D: | Yes, date unknown |
| Barbazon (1st Earl of Bessborough) Ponsonby | |
| D: | 4 Jul 1758 |
| Sarah Margetson -1733 |
| Sarah Margetson | |
| D: | 21 May 1733 |
| Henry (1st Earl of Ely) Loftus 1709-Yes, date unknown |
| Henry (1st Earl of Ely) Loftus | |
| B: | 18 Nov 1709 |
| D: | Yes, date unknown |
| Charles (1st Marquess of Ely) Tottenham 1738-Yes, date unknown |
| Charles (1st Marquess of Ely) Tottenham | |
| B: | 23 Jan 1738 |
| D: | Yes, date unknown |
| Jane (of Killarney) Myhill | |
| M: | 23 Jun 1766 |
| D: | 21 Feb 1807 |
| Elizabeth (of Ely) Loftus -Yes, date unknown |
| Elizabeth (of Ely) Loftus | |
| D: | Yes, date unknown |
| Nicholas (2nd Earl of Ely) 3rd Viscount Loftus 1738-Yes, date unknown |
| Nicholas (2nd Earl of Ely) 3rd Viscount Loftus | |
| B: | 11 Sep 1738 |
| D: | Yes, date unknown |
| Nicholas (1st Earl of Ely) 2nd Viscount Loftus | |
| D: | 31 Oct 1766 |
| Anne (of Duncannon) Ponsonby -Yes, date unknown |
| Anne (of Duncannon) Ponsonby | |
| D: | Yes, date unknown |
| Nicholas (of Ely) 1st Viscount Loftus Abt 1689-1763 |
| Nicholas (of Ely) 1st Viscount Loftus | |
| B: | Abt 1689 |
| M: | Apr 1706 |
| D: | 31 Dec 1763 |
| Stephen (1st Earl Mountcashell) Moore | |
| D: | 14 May 1790 |
| Helena Rawdon -Yes, date unknown |
| Helena Rawdon | |
| M: | 3 Jun 1769 |
| D: | Yes, date unknown |
| Stephen (1st Viscount Mountcashell) Moore Abt 1695-1766 |
| Stephen (1st Viscount Mountcashell) Moore | |
| B: | Abt 1695 |
| D: | 26 Feb 1766 |
| Alicia Colville -Yes, date unknown |
| Alicia Colville | |
| D: | Yes, date unknown |
| Elizabeth (of Duncannon) Ponsonby -Yes, date unknown |
| Elizabeth (of Duncannon) Ponsonby | |
| D: | Yes, date unknown |
| Richard (of Kilworth) Moore -Yes, date unknown |
| Richard (of Kilworth) Moore | |
| D: | Yes, date unknown |
|
| William (1st Viscount Duncannon) Ponsonby | |
| B: | 1659 |
| D: | 17 Nov 1724 |
| Mary Moore -1713 |
| Mary Moore | |
| D: | 26 May 1713 |