William Henry Cavendish CAVENDISH-BENTINCK, 3rd Duke of Portland, KG, PC, FRS
1738 - 1809 (71 years)
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| William Henry Cavendish CAVENDISH-BENTINCK, 3rd Duke of Portland, KG, PC, FRS | |
| B: | 14 Apr 1738 |
| D: | 30 Oct 1809 |
| Her Grace Dorothy CAVENDISH, Duchess of Portland | |
| B: | 27 Aug 1750 |
| D: | 3 Jun 1794 |