Family: William (2nd Duke of Portland) Bentinck / Margaret Cavendish-Harley (F48681)
m. 11 Jul 1734
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 | Henry (1st Duke of Portland) Bentinck (1682-1726)
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 | Elizabeth (of Gainsborough ) Noel ( -1737)
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| Edward (2nd Earl of Oxford) Harley (1689-1741)
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| Henrietta Cavendish-Holles (1693-1755)
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| William (2nd Duke of Portland) Bentinck (1708-1762)
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| Margaret Cavendish-Harley (1716-1785)
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| Elizabeth Cavendish-Bentinck (1735- ) |
| Henrietta Cavendish-Bentinck (1737- ) |
| Edward Charles Bentinck (1744- ) |