| 1. Hendrik Berend Koolhof |
 |
| G: |
ca. feb 1928 |
| te: |
Bellingwolde, NL |
| O: |
26 okt 1928 |
| te: |
Veelerveen, Bellingwolde, NL |
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| 2. Frederik Koolhof |
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| G: |
15 apr 1907 |
| te: |
Scheemda, NL |
| H: |
24 sep 1927 |
| te: |
Vlagtwedde, NL |
| O: |
Ja, datum echter onbekend |
| te: |
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| 4. Hendrik Koolhof |
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| G: |
22 okt 1879 |
| te: |
Eexta, Scheemda, NL |
| H: |
24 mrt 1904 |
| te: |
Scheemda, NL |
| O: |
12 nov 1946 |
| te: |
Scheemda, NL |
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| 8. Friedrik Koolhof |
=> |
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| G: |
11 nov 1849 |
| te: |
Veendam, NL |
| H: |
14 feb 1873 |
| te: |
Scheemda, NL |
| O: |
21 mei 1902 |
| te: |
Scheemda, NL |
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| 9. Jantje Drenth |
=> |
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| G: |
23 okt 1853 |
| te: |
Midwolda, NL |
| O: |
1 okt 1950 |
| te: |
Scheemda, NL |
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| 5. Grietje de Jonge |
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| G: |
6 apr 1884 |
| te: |
Heiligerlee, Scheemda, NL |
| O: |
Ja, datum echter onbekend |
| te: |
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| 10. Jan de Jonge |
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| G: |
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| te: |
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| H: |
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| te: |
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| O: |
Ja, datum echter onbekend |
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| 6. Berend Spa |
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| G: |
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| te: |
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| H: |
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| te: |
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| O: |
Ja, datum echter onbekend |
| te: |
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| 12. |
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| 13. |
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| 15. |
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ca. 1928 - 1928 (~ 0 jaar)
