Marchioness of Hertford Isabella Fitzroy
1726 - 1782 (56 years)(
= Descendancy chart to this point, 
= Expand, 
= Collapse)
- 1 Marchioness of Hertford Isabella Fitzroy [1] b. 19 Jul 1726 d. 10 Nov 1782
- Marquess Francis of Hertford Seymour, I b. 1718 d. 1794
- 2 Admiral Hugh Seymour [1.1] b. 1759 d. 1801
- Lady Anna Horatia Waldegrave b. 1759 d. 1801
- 3 Sir Horace Beauchamp Seymour [1.1.1] b. 1791 d. 1856
- Elizabeth Malet Palk d. 1827
- 4 Adelaide Horatia Elizabeth Seymour [1.1.1.1] b. 1825 d. 1877
[ =>]
- 4 Adelaide Horatia Elizabeth Seymour [1.1.1.1]
- 3 Sir Horace Beauchamp Seymour [1.1.1]
- 2 Admiral Hugh Seymour [1.1]