Family: William Lamb, 2nd. Viscount Melbourne / Lady Caroline Ponsonby (F3778)
m. 3 Jun 1805Peniston Lamb, 1st. Viscount Melbourne (1745-1828) 
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Elizabeth Milbanke (1750-1818)
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| Peniston Lamb (1770-1805) |
| Elizabeth Lamb (1777- ) |
Frederick James Lamb, 3rd. Viscount Melbourne (1782-1853)  |
| Harriet Ann Lamb (1789-1803) |
| George Lamb (1784-1834) |
| Emily Mary Lamb (1787-1869) |
| Frederick 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)
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| William Lamb, 2nd. Viscount Melbourne (1779-1848)
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