| 1. Marrigje Kok |
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| G: |
ca. 1845 |
| te: |
Lange Ruige Weide |
| O: |
27 sep 1895 |
| te: |
Lange Ruige Weide |
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| 2. Cornelis Kok |
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| G: |
28 mrt 1806 |
| te: |
Waarder |
| H: |
17 jun 1831 |
| te: |
Hekendorp |
| O: |
29 sep 1855 |
| te: |
Lange Ruige Weide |
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| 4. Frederik Kok |
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Ja, datum echter onbekend |
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| 11. |
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| 6. Lambertus Leeuwenhoek |
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| D: |
17 nov 1771 |
| te: |
Stein (bij Haastrecht) |
| H: |
7 mei 1803 |
| te: |
Jaarsveld |
| O: |
31 jan 1826 |
| te: |
Hekendorp |
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| 12. Jacob Leeuwenhoek |
=> |
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| D: |
19 feb 1736 |
| te: |
Haastrecht |
| H: |
30 jan 1771 |
| te: |
Haastrecht |
| B: |
20 mei 1774 |
| te: |
Haastrecht |
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ca. 1845 - 1895 (50 jaar)