| 1. John Dugan |
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| B: |
1875 |
| P: |
Pittsburgh, Allegheny County, Pennsylvania, USA |
| D: |
25 Aug 1910 |
| P: |
Pittsburgh, Allegheny County, Pennsylvania, USA |
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| 2. Thomas P. Dugan |
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| B: |
1843 |
| P: |
Ireland |
| M: |
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| D: |
7 Mar 1916 |
| P: |
Pittsburgh, Allegheny County, Pennsylvania, USA |
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| 3. Mary Clara Lauth |
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| B: |
25 May 1850 |
| P: |
Pittsburgh, Allegheny County, Pennsylvania, USA |
| D: |
6 Oct 1917 |
| P: |
Crafton, Allegheny County, Pennsylvania, USA |
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| 6. Johannes Lauth |
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| B: |
22 Nov 1826 |
| P: |
Bruchweiler-Bärenbach, Pfalz, Bayern |
| M: |
26 Jun 1849 |
| P: |
Pittsburgh, Allegheny County, Pennsylvania, USA |
| D: |
2 Mar 1875 |
| P: |
Pittsburgh, Allegheny County, Pennsylvania, USA |
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| 12. Franz Joseph Lauth |
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| B: |
7 May 1791 |
| P: |
Bruchweiler-Bärenbach, Pfalz |
| M: |
28 Apr 1823 |
| P: |
Bruchweiler-Bärenbach, Pfalz, Bayern |
| D: |
2 Dec 1851 |
| P: |
Pittsburgh, Allegheny County, Pennsylvania, USA |
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1875 - 1910 (35 years)