Tracing Douglas family roots - unraveling history, one generation at a time.
1670 - Yes, date unknown
| Henry (8th Earl of Thomond) O'brien 1688-1741 |
| Henry (8th Earl of Thomond) O'brien | |
| B: | 14 Aug 1688 |
| D: | 20 Apr 1741 |
 | Elizabeth (of Somerset) Seymour 1685-1734 |
| Elizabeth (of Somerset) Seymour | |
| B: | 1685 |
| M: | 14 Jun 1707 |
| Isleworth, Middlesex | |
| D: | 2 Apr 1734 |
| Elizabeth O'brien 1689-1689 |
| Elizabeth O'brien | |
| B: | 1689 |
| D: | 1689 |
| Mary O'brien -1716 |
| Mary O'brien | |
| D: | 30 Aug 1716 |
| Margaret O'brien -Yes, date unknown |
| Margaret O'brien | |
| D: | Yes, date unknown |
|
| Henry Horatio Lord O'brien 1670-Yes, date unknown |
| Henry Horatio Lord O'brien | |
| B: | 1670 |
| D: | Yes, date unknown |
| Henrietta (of Beaufort) Somerset 1669-1715 |
| Henrietta (of Beaufort) Somerset | |
| B: | 1669 |
| M: | 24 Jun 1686 |
| D: | 2 Aug 1715 |
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