| 1. Antje Pieters Elfring |
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| B: |
05 Dec 1838 |
| P: |
Zevenhuizen, Leek, GR, NLD |
| D: |
17 Jun 1899 |
| P: |
Leeuwarden, FR, NLD |
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| 2. Pieter Harms Elfring |
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| B: |
01 Apr 1813 |
| P: |
Veendam, GR, NLD |
| M: |
12 Jun 1839 |
| P: |
Leeuwarden, FR, NLD |
| D: |
Bef 1861 |
| P: |
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| 4. Harm Berends Elfring |
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| B: |
Abt 1778 |
| P: |
Veendam, GR, NLD |
| M: |
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| D: |
09 Oct 1826 |
| P: |
Stroobos, Grootegast, GR, NLD |
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| 10. |
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| 11. |
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| 3. Dirkje Alles Boonstra |
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| B: |
16 Feb 1815 |
| P: |
Ferwerd, Ferwerderadeel, FR, NLD |
| D: |
10 Jun 1881 |
| P: |
Leeuwarden, FR, NLD |
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| 6. Alle Sakes Boonstra |
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| B: |
17 Dec 1788 |
| P: |
Ferwerd, Ferwerderadeel, FR, NLD |
| M: |
28 Feb 1808 |
| P: |
Ferwerd, Ferwerderadeel, FR, NLD |
| D: |
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| 12. Saake Kornelis Boonstra |
=> |
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| B: |
1744 |
| P: |
Hallum, Ferwerderadeel, FR, NLD |
| M: |
07 May 1785 |
| P: |
Hallum, Ferwerderadeel, FR, NLD |
| D: |
26 Mar 1816 |
| P: |
Hallum, Ferwerderadeel, FR, NLD |
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| 14. |
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| 15. |
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1838 - 1899 (60 years)