| 1. Martzen Jans Wiersma |
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| B: |
18 Feb 1841 |
| P: |
Nijland, Wijmbritseradeel, FR, NLD |
| D: |
06 Apr 1867 |
| P: |
Utingeradeel, FR, NLD |
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| 2. Jan Jelles Wiersma |
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| B: |
Abt 1810 |
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Oldeboorn, FR, NLD |
| M: |
23 May 1840 |
| P: |
Wijmbritseradeel, FR, NLD |
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| 4. Jelle Jans Wiersma |
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| B: |
Abt 1770 |
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Itens, Hennaarderadeel, FR, NLD |
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| D: |
10 Dec 1834 |
| P: |
Nijehaske, Haskerland, FR, NLD |
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| 3. Johanna Kornelis Post |
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| B: |
11 Jan 1813 |
| P: |
Joure, Haskerland, FR, NLD |
| D: |
14 Aug 1875 |
| P: |
Utingeradeel, FR, NLD |
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| 6. Kornelis Jans Post |
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| B: |
Abt 1787 |
| P: |
Sintjohannesga, Schoterland, FR, NLD |
| M: |
13 Sep 1807 |
| P: |
Broek, Doniawerstal, FR, NLD |
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1841 - 1867 (26 years)