William Ponsonby, 1st. Viscount Duncannon
(Notes: You may have to scroll down or right to see chart.)
| Lady Catherine Ponsonby | 
| Lady Catherine Ponsonby | |
| B: | 14 Oct 1742 | 
| D: | 4 Sep 1789 | 
| Aubrey Beauclerk, 5th. Duke of St. Albans | |
| B: | 3 Jun 1740 | 
| D: | 9 Feb 1802 | 
| Lady Charlotte Ponsonby | 
| Lady Charlotte Ponsonby | |
| B: | Abt 1750 | 
| D: | 13 May 1822 | 
| William Fitzwilliam, 4th. Earl Fitzwilliam | |
| B: | 30 May 1748 | 
| Milton House, Peterborough, Northamptonshire, England | |
| D: | 8 Feb 1833 | 
| Milton House, Peterborough, Northamptonshire, England | |
| Frederick Ponsonby, 3rd. Earl of Bessborough | |
| B: | 24 Jan 1758 | 
| Bessborough, Ireland | |
| D: | 3 Feb 1844 | 
| Lady Henrietta Frances Spencer | 
| Lady Henrietta Frances Spencer | |
| B: | 16 Jun 1761 | 
| Althorp Manor, Brington, Northamptonshire, England | |
| D: | 11 Nov 1821 | 
| Italy | |
| William Ponsonby, 2nd. Earl of Bessborough | |
| B: | 1704 | 
| D: | 11 Mar 1793 | 
| Caroline Cavendish | 
| Caroline Cavendish | |
| B: | 22 May 1719 | 
| D: | 20 Jan 1760 | 
| William Brabazon Ponsonby, 1st. Baron Ponsonby of Imokilly | |
| B: | 15 Sep 1744 | 
| Dublin, County Dublin, Ireland | |
| D: | 5 Nov 1806 | 
| London, England | |
| Hon. Louisa Molesworth | 
| Hon. Louisa Molesworth | |
| B: | 23 Oct 1749 | 
| Dublin, County Dublin, Ireland | |
| D: | 1 Sep 1824 | 
| Wentworth, Yorkshire, England | |
| Rt. Hon. George Ponsonby | 
| Rt. Hon. George Ponsonby | |
| B: | 5 Mar 1755 | 
| D: | 8 Jul 1817 | 
| Mayfair, Westminster, Middlesex, England | |
| Mary Butler | 
| Mary Butler | |
| B: | Unknown | 
| D: | Aft 1780 | 
| John Ponsonby | 
| John Ponsonby | |
| B: | Unknown | 
| D: | Unknown | 
| Richard Ponsonby | 
| Richard Ponsonby | |
| B: | Unknown | 
| D: | Unknown | 
| Frederick Ponsonby | 
| Frederick Ponsonby | |
| B: | Unknown | 
| D: | Unknown | 
| Catherine Ponsonby | 
| Catherine Ponsonby | |
| B: | Unknown | 
| D: | Unknown | 
| Richard Boyle, 2nd. Earl of Shannon | 
| Richard Boyle, 2nd. Earl of Shannon | |
| B: | Unknown | 
| D: | Unknown | 
| Frances Ponsonby | 
| Frances Ponsonby | |
| B: | Unknown | 
| D: | Unknown | 
| Cornelius O'Callaghan, 1st. Earl of Lismore | 
| Cornelius O'Callaghan, 1st. Earl of Lismore | |
| B: | Unknown | 
| D: | Unknown | 
| Charlotte Ponsonby | 
| Charlotte Ponsonby | |
| B: | Unknown | 
| D: | Unknown | 
| Rt. Hon. Denis Bowes Daly | 
| Rt. Hon. Denis Bowes Daly | |
| B: | Unknown | 
| D: | Unknown | 
| Henrietta Ponsonby | 
| Henrietta Ponsonby | |
| B: | Unknown | 
| D: | Unknown | 
| Rt. Hon. John Ponsonby | 
| Rt. Hon. John Ponsonby | |
| B: | 29 Mar 1713 | 
| D: | 12 Dec 1789 | 
| Lady Elizabeth Cavendish | 
| Lady Elizabeth Cavendish | |
| B: | 1723 | 
| D: | 1796 | 
| Lady Sarah Ponsonby | 
| Lady Sarah Ponsonby | |
| B: | Unknown | 
| D: | 19 Jan 1737 | 
| Edward Moore, 5th. Earl of Drogheda | 
| Edward Moore, 5th. Earl of Drogheda | |
| B: | 1701 | 
| D: | 28 Oct 1758 | 
| Lady Letitia Ponsonby | 
| Lady Letitia Ponsonby | |
| B: | Abt 1720 | 
| D: | 9 Feb 1754 | 
| Hervey Morres, 1st. Viscount Mountmorres | 
| Hervey Morres, 1st. Viscount Mountmorres | |
| B: | Unknown | 
| D: | Aft 1742 | 
| Brabazon Ponsonby, 1st. Earl of Bessborough | |
| B: | 1679 | 
| D: | 4 Jul 1758 | 
| Sarah Margetson | 
| Sarah Margetson | |
| B: | Unknown | 
| D: | 21 May 1773 | 
| Dorothy Ponsonby | 
| Dorothy Ponsonby | |
| B: | Unknown | 
| D: | Aft 1724 | 
| William Hore, MP | 
| William Hore, MP | |
| B: | Unknown | 
| D: | Feb 1745 | 
| Chambre Brabazon Ponsonby | 
| Chambre Brabazon Ponsonby | |
| B: | 1730 | 
| Bessborough, Ireland | |
| D: | 20 Dec 1762 | 
| Elizabeth Clarke | 
| Elizabeth Clarke | |
| B: | Unknown | 
| D: | Aft 1746 | 
| Sarah Ponsonby | 
| Sarah Ponsonby | |
| B: | 1755 | 
| D: | 9 Dec 1831 | 
| St. Collen's, Llangollen, Denbighshire, Wales | |
| Louisa Lyons | 
| Louisa Lyons | |
| B: | 1730 | 
| D: | Feb 1758 | 
| Chambre Brabazon Ponsonby-Barker | 
| Chambre Brabazon Ponsonby-Barker | |
| B: | 12 Jun 1762 | 
| D: | 13 Dec 1834 | 
| Henrietta Taylour | 
| Henrietta Taylour | |
| B: | Abt 1765 | 
| D: | 12 Jan 1838 | 
| Kilcooley Abbey, County Tipperary, Ireland | |
| Mary Barker | 
| Mary Barker | |
| B: | Unknown | 
| D: | Aft 1762 | 
| Major-General Henry Ponsonby | 
| Major-General Henry Ponsonby | |
| B: | Unknown | 
| D: | 11 May 1745 | 
| Fontenoy, Belgium | |
| Lady Frances Brabazon | 
| Lady Frances Brabazon | |
| B: | Abt 1688 | 
| D: | 4 Nov 1751 | 
| Capt. Folliott Ponsonby | 
| Capt. Folliott Ponsonby | |
| B: | Aft 1681 | 
| D: | 1746 | 
| Jane Taylor | 
| Jane Taylor | |
| B: | Unknown | 
| D: | 1787 | 
| Elizabeth Ponsonby | 
| Elizabeth Ponsonby | |
| B: | Unknown | 
| D: | Aft 1699 | 
| Richard Moore, MP | 
| Richard Moore, MP | |
| B: | Unknown | 
| D: | Aft 1692 | 
| Thomas Newcomen | 
| Thomas Newcomen | |
| B: | Unknown | 
| D: | Aft 1724 | 
| Anne Ponsonby | 
| Anne Ponsonby | |
| B: | Unknown | 
| D: | Aft 1709 | 
| Nicholas Loftus, 1st. Viscount Loftus of Ely | 
| Nicholas Loftus, 1st. Viscount Loftus of Ely | |
| B: | Unknown | 
| D: | Aft 1709 | 
| Letitia Ponsonby | 
| Letitia Ponsonby | |
| B: | 1701 | 
| D: | Aft 1722 | 
| James May | 
| James May | |
| B: | Unknown | 
| D: | Aft 1722 | 
  | 
| William Ponsonby, 1st. Viscount Duncannon | |
| B: | 1659 | 
| D: | 17 Nov 1724 | 
| Mary Moore | 
| Mary Moore | |
| B: | 1662 | 
| Ardee, County Louth, Ireland | |
| D: | 26 May 1713 | 
