Family: William Francis Spencer Ponsonby, 1st. Baron de Mauley / Lady Barbara Ashley-Cooper (F3779)
m. 8 Aug 1814Frederick Ponsonby, 3rd. Earl of Bessborough (1758-1844) 
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Lady Henrietta Frances Spencer (1761-1821)
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John William Ponsonby, 4th. Earl of Bessborough (1781-1847)  |
| Major-General Sir Frederick Cavendish Ponsonby (1783-1837) |
| Lady Caroline Ponsonby (1785-1828) |
| Anthony Ashley-Cooper, 5th. Earl of Shaftesbury (1761-1811)
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| Barbara Webb ( -1789) |
| Lady Barbara Ashley-Cooper (1788-1844)
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| Frances Anna Georgiana Ponsonby (1817-1879) |
| Henry William George Ponsonby (1819-1821) |
| Anthony Ashley Wentworth Ponsonby (1828-1829) |
| Capt. Ashley George John Ponsonby, M.P. (1831-1898) |