1663 - 1690 (27 years)
| Admiral Hugh SEYMOUR 1759-1801 |
| Admiral Hugh SEYMOUR | |
| B: | 1759 |
| D: | 1801 |
| Lady Anne Horatia WALDEGRAVE | |
| D: | 1801 |
Isabella 1726-1782 |
| Isabella | |
| B: | 1726 |
| D: | 1782 |
| Marquess Francis Of Hertford I SEYMOUR 1718-1794 |
| Marquess Francis Of Hertford I SEYMOUR | |
| B: | 1718 |
| D: | 1794 |
| Charles FITZROY, Duke Of Grafton 1683-1757 |
| Charles FITZROY, Duke Of Grafton | |
| B: | 1683 |
| D: | 1757 |
| Lady Henrietta SOMERSET -1726 |
| Lady Henrietta SOMERSET | |
| D: | 1726 |
| Henry FITZROY, Duke Of Grafton 1663-1690 |
| Henry FITZROY, Duke Of Grafton | |
| B: | 1663 |
| D: | 1690 |
| Lady Isabella BENNETT -1723 |
| Lady Isabella BENNETT | |
| D: | 1723 |
