Henry (1st Duke of Portland) Bentinck
1682 - 1726 (44 years)
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 | Elizabeth Cavendish-Bentinck 1735-Yes, date unknown |
| Elizabeth Cavendish-Bentinck | |
| B: | 27 Jul 1735 |
| D: | Yes, date unknown |
| Henrietta Cavendish-Bentinck 1737-Yes, date unknown |
| Henrietta Cavendish-Bentinck | |
| B: | 8 Feb 1737 |
| D: | Yes, date unknown |
| William Henry (4th Duke of Portland) Cavendish-Bentinck | |
| B: | 24 Jun 1768 |
| D: | 27 Mar 1854 |
| Lord William Henry Cavendish-Bentinck 1774-1839 |
| Lord William Henry Cavendish-Bentinck | |
| B: | 1774 |
| D: | 1839 |
| Charlotte Cavendish-Bentin 1775-Yes, date unknown |
| Charlotte Cavendish-Bentin | |
| B: | 3 Oct 1775 |
| D: | Yes, date unknown |
| Charles Grenville Abt 1775-Yes, date unknown |
| Charles Grenville | |
| B: | Abt 1775 |
| D: | Yes, date unknown |
| Mary Cavendish-Bentin 1778-Yes, date unknown |
| Mary Cavendish-Bentin | |
| B: | 18 Mar 1778 |
| D: | Yes, date unknown |
| Lord William Charles Augustus Cavendish-Bentinck | |
| B: | 3 Oct 1780 |
| D: | 1826 |
| Anne (Abdy) Wellesley -1875 |
| Anne (Abdy) Wellesley | |
| D: | 1875 |
| Georgina Augusta Frederica Seymour | |
| M: | 21 Sep 1808 |
| D: | 10 Dec 1813 |
| Lord Frederick Cavendish-Bentinck 1781-1828 |
| Lord Frederick Cavendish-Bentinck | |
| B: | 1781 |
| D: | 1828 |
| Prime Minister William Henry (3rd Duke of Portland) Cavendish-Bentinck | |
| B: | 14 Apr 1738 |
| D: | 30 Oct 1809 |
| Dorothea Cavendish 1750-1794 |
| Dorothea Cavendish | |
| B: | 17 Aug 1750 |
| D: | 3 Jun 1794 |
| Edward Charles Bentinck 1744-Yes, date unknown |
| Edward Charles Bentinck | |
| B: | 3 Mar 1744 |
| D: | Yes, date unknown |
| William (2nd Duke of Portland) Bentinck 1708-1762 |
| William (2nd Duke of Portland) Bentinck | |
| B: | 1 Mar 1708 |
| D: | 1 May 1762 |
| Margaret Cavendish-Harley 1716-1785 |
| Margaret Cavendish-Harley | |
| B: | 1716 |
| M: | 11 Jul 1734 |
| D: | 17 Jul 1785 |
| Anne Bentinck -Yes, date unknown |
| Anne Bentinck | |
| D: | Yes, date unknown |
| Isabella Bentinck -Yes, date unknown |
| Isabella Bentinck | |
| D: | Yes, date unknown |
| George Bentinck -Yes, date unknown |
| George Bentinck | |
| D: | Yes, date unknown |
| Amelia Bentinck -Yes, date unknown |
| Amelia Bentinck | |
| D: | Yes, date unknown |
|
| Henry (1st Duke of Portland) Bentinck 1682-1726 |
| Henry (1st Duke of Portland) Bentinck | |
| B: | 17 May 1682 |
| D: | 4 Jul 1726 |
| Elizabeth (of Gainsborough ) Noel | |
| M: | 9 Jun 1704 |
| D: | 19 Mar 1737 |