John (Duke of Newcastle) Holles
1662 - 1711 (49 years)(
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- 1 John (Duke of Newcastle) Holles [1] b. 9 Jan 1662 d. 15 Jul 1711
- Margaret Cavendish d. 1755
- 2 Henrietta Cavendish-Holles [1.1] b. 11 Feb 1693 d. 26 Dec 1755
- Edward (2nd Earl of Oxford) Harley b. 2 Jun 1689 d. 1741
- 3 Margaret Cavendish-Harley [1.1.1] b. 1716 d. 17 Jul 1785
- William (2nd Duke of Portland) Bentinck b. 1 Mar 1708 d. 1 May 1762
- 4 Elizabeth Cavendish-Bentinck [1.1.1.1] b. 27 Jul 1735 d. Yes, date unknown
- 4 Henrietta Cavendish-Bentinck [1.1.1.2] b. 8 Feb 1737 d. Yes, date unknown
- 4 Prime Minister William Henry (3rd Duke of Portland) Cavendish-Bentinck [1.1.1.3] b. 14 Apr 1738 d. 30 Oct 1809
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- 4 Edward Charles Bentinck [1.1.1.4] b. 3 Mar 1744 d. Yes, date unknown
- 4 Elizabeth Cavendish-Bentinck [1.1.1.1]
- 3 Margaret Cavendish-Harley [1.1.1]
- 2 Henrietta Cavendish-Holles [1.1]