Achterhoek Ancestors
Family: Jan Willem Seijbel / Janna Gesina Oonk (F14850)
m. 22 Oct 1851Hendrik Coenraad Seijbel (1800- ) 
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| Hendrik Jan Oonk (1788- )
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Janna Geertruid Sikkink (1800-1880)
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Harmen Jan Oonk (1820- )  |
| Janna Geertruid Oonk (1828-1905) |
| Johanna Oonk (1830-1906) |
| Hendrika Johanna Oonk (1839-1883) |
| Jan Willem Seijbel (1829- )
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| Janna Gesina Oonk (1822- )
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