| Male John Ponsonby |
| Birth | 29 March 1713 | Leinster, Kilkenny, Ireland |
| Death | 12 December 1789 | Kilkenny, Ireland |
| Burial | ||
| Marriage | 22 Sep 1743 | Derby, Derbyshire, England |
| Father | Brabazon (1st Earl of Besborough and Viscount duncannon) Ponsonby | F1899 Group Sheet | |
| Mother | Sarah Margetson | F1899 Group Sheet | |
| Female Elizabeth Cavendish |
| Birth | 24 Apr 1723 | Welbeck, Nottinghamshire, England |
| Death | Abt 1795 | Westminster, London, England |
| Burial | ||
| Father | ||
| Mother | ||
| Male + William Brabazon Ponsonby |
| Birth | 15 September 1744 | Co, Kilkenny, Ireland |
| Death | 5 November 1806 | London, London, England |
| Burial | ||
| Spouse | Louisa Molesworth | F4477 | |
| Marriage | 14 Dec 1769 | St. Anne, Dublin, County Dublin, Ireland |
| Female + Catherine Ponsonby |
| Birth | 02 Apr 1746 | Co, Kilkenny, Ireland |
| Death | 30 Jan 1827 | |
| Burial | ||
| Spouse | Richard Boyle, 2nd Earl of Shannon | F4487 | |
| Marriage | 15 Dec 1763 | |
| Female + Frances Ponsonby |
| Birth | 18 Feb 1757 | Kilkenny, Ireland |
| Death | 25 Mar 1827 | Tunbridge Wells, Kent, England |
| Burial | ||
| Spouse | Cornelius OCallaghan, 1st Baron Lismore | F4484 | |
| Marriage | 13 Dec 1774 | |
| Female Charlotte Ponsonby |
| Birth | 22 Dec 1761 | |
| Death | 27 Aug 1781 | Paris, Paris, Ile-de-France, France |
| Burial |
| Male Frederick Ponsonby |
| Birth | 18 Mar 1763 | Bessborough, Ballymackey, Tipperary, Barony of Upper Ormond, Munster (Nenagh) Ireland |
| Death | 28 Jul 1769 | |
| Burial |