Family: Major-General Sir William Ponsonby, KCB / Hon. Georgiana Fitzroy (F3792)
m. 20 Jan 1807Hon. Louisa Molesworth (1749-1824) 
|
John Brabazon Ponsonby, Viscount Ponsonby (1770-1855)  |
| Richard Ponsonby (1772-1853) |
| Hon. George Ponsonby, M.P. (1774-1863) |
| Frederick Ponsonby ( -1849) |
| Mary Elizabeth Ponsonby (1775-1861) |
| Major-General Sir William Ponsonby, KCB (1772-1815)
|
| Hon. Georgiana Fitzroy ( -1817) |
| Mary Elizabeth Ponsonby (1811- ) |
| Isabella Frances Ponsonby (1812- ) |