Family: William Ponsonby, 2nd. Earl of Bessborough / Caroline Cavendish (F3449)
m. 5 Jul 1739Brabazon Ponsonby, 1st. Earl of Bessborough (1679-1758) 
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Sarah Margetson ( -1773)
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Rt. Hon. John Ponsonby (1713-1789)  |
| Lady Sarah Ponsonby ( -1737) |
| Lady Letitia Ponsonby (1720-1754) |
| William Cavendish, 3rd.Duke of Devonshire KG PC (1698-1755)
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| Katherine Hoskyns (1698-1777) |
| William Cavendish, 4th. Duke of Devonshire KG PC (1720-1764) |
| Lady Elizabeth Cavendish (1723-1796) |
| William Ponsonby, 2nd. Earl of Bessborough (1704-1793)
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| Caroline Cavendish (1719-1760)
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| Lady Catherine Ponsonby (1742-1789) |
| Lady Charlotte Ponsonby (1750-1822) |
| Frederick Ponsonby, 3rd. Earl of Bessborough (1758-1844) |