Duke of Grafton Henry Fitzroy
1663 - 1690 (27 years)(
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- 1 Duke of Grafton Henry Fitzroy [1] b. 1663 d. 1690
- Lady Isabella Bennett d. 1723
- 2 Duke of Grafton Charles Fitzroy, II [1.1] b. 25 Oct 1673 d. 6 May 1757
- Lady Henrietta Somerset b. 27 Aug 1690 d. 09 Aug 1726
- 3 Charles Henry Fitzroy [1.1.1] b. 13 Apr 1714 d. 1715
- 3 George Fitzroy [1.1.2] b. 24 Aug 1715 d. 07 Jul 1747
- 3 Augustus Fitzroy [1.1.3] b. 16 Oct 1716 d. 24 May 1741
- Elizabeth Cosby b. 1721 d. 21 Dec 1788
- 4 Duke of Grafton Augustus Henry Fitzroy, III [1.1.3.1] b. 28 Sep 1735 d. 14 Mar 1811
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- 4 Baron of Southampton Charles Fitzroy [1.1.3.2] b. 25 Jun 1737 d. 21 Mar 1797
- 4 Duke of Grafton Augustus Henry Fitzroy, III [1.1.3.1]
- 3 Charles Fitzroy [1.1.4] b. 23 Apr 1718 d. 29 Jul 1739
- 3 Caroline Fitzroy [1.1.5] b. Abt 1720
- 3 Harriet Fitzroy [1.1.6] b. Abt 1724
- 3 Marchioness of Hertford Isabella Fitzroy [1.1.7] b. 19 Jul 1726 d. 10 Nov 1782
- Marquess Francis of Hertford Seymour, I b. 1718 d. 1794
- 4 Admiral Hugh Seymour [1.1.7.1] b. 1759 d. 1801
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- 4 Admiral Hugh Seymour [1.1.7.1]
- 3 Charles Henry Fitzroy [1.1.1]
- 2 Duke of Grafton Charles Fitzroy, II [1.1]