Tracing Douglas family roots - unraveling history, one generation at a time.

![]() | Mary Pattison Semple |
| Mary Pattison Semple | |
| B: | 1834 |
| D: | 8 Jan 1914 |
| Pittsburgh, PA. Unmarried | |
|
![]() | Alexander Semple |
| Alexander Semple | |
| B: | 1777 |
| Castledawson | |
| D: | 19 Apr 1860 |
| Pittsburgh, PA. | |
![]() | Elizabeth Irwin |
| Elizabeth Irwin | |
| B: | 1793 |
| M: | 11 Sep 1827 |
| D: | 21 Jul 1866 |
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