Family: John Spencer, 1st Earl Spencer / Margaret Georgiana Poyntz, The Countess Spencer (F1320)
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 | Hon. John Spencer (1708-1746)
|
 | Georgiana Caroline Carteret (1716-1780) |
| Stephen Poyntz (1685-1750) |
| Anna Maria Mordaunt (1712-1771)
|
| John Spencer, 1st Earl Spencer (1734-1783)
|
| Margaret Georgiana Poyntz, The Countess Spencer (1737-1814)
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| Georgiana Spencer, Duchess of Devonshire (1757-1806) |
| George John Spencer, 2nd Earl Spencer (1758-1834)  |