 1917 - 1993 (76 years)
| 1. Robert John "Bob" Mahn |
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| B: |
14 May 1917 |
| P: |
, Ontario, Canada |
| D: |
7 Aug 1993 |
| P: |
Kitchener, Waterloo Region, Ontario, Canada |
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| 2. John Henry Noah "Jack" Mahn |
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| B: |
23 Aug 1888 |
| P: |
Hanover, Bentinck Twp., Grey Co., Ontario, Canada |
| M: |
14 Oct 1913 |
| P: |
Kitchener, Waterloo Region, Ontario, Canada |
| D: |
31 Jul 1965 |
| P: |
Kitchener, Waterloo Region, Ontario, Canada |
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| 4. John Henry Mahn |
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| B: |
25 Jul 1849 |
| P: |
Wichmannsdorf, , Mecklenburg-Vorpommern, Germany |
| M: |
31 Jan 1871 |
| P: |
Brant Twp., Bruce Co., Ontario, Canada |
| D: |
1 Sep 1922 |
| P: |
Kitchener, Waterloo Region, Ontario, Canada |
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| 5. Augusta Voelker |
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| B: |
4 Oct 1851 |
| P: |
Kleinen, , Mecklenburg-Vorpommern, Germany |
| D: |
9 Jul 1921 |
| P: |
Kitchener, Waterloo Region, Ontario, Canada |
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| 3. Edna Elizabeth Niergarth |
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| B: |
7 Feb 1890 |
| P: |
Waterloo City, Waterloo Region, Ontario, Canada |
| D: |
11 Mar 1981 |
| P: |
Kitchener, Waterloo Region, Ontario, Canada |
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| 6. Henry Niergarth |
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| B: |
7 Apr 1851 |
| P: |
Wilmot Twp., Waterloo Region, Ontario, Canada |
| M: |
29 Apr 1873 |
| P: |
New Hamburg, Wilmot Twp., Waterloo Region, Ontario, Canada |
| D: |
21 Apr 1933 |
| P: |
Preston (Cambridge), Waterloo Region, Ontario, Canada |
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| 12. Jacob Niergarth |
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| B: |
20 Apr 1808 |
| P: |
, Germany |
| M: |
4 Oct 1833 |
| P: |
Obermiesau, Pfalz, Bavaria, Germany |
| D: |
1 Mar 1861 |
| P: |
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| 7. Maria "Mary" Brodrecht |
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| B: |
7 Feb 1856 |
| P: |
New Hamburg, Wilmot Twp., Waterloo Region, Ontario, Canada |
| D: |
14 Jun 1937 |
| P: |
Kitchener, Waterloo Region, Ontario, Canada |
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