Achterhoek Ancestors
Family: Gerrit Jan Brethouwer / Janna Oonk (F13158)
m. 19 Jul 1935Jan Gesinus Brethouwer (1879- ) 
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Johanna Hendrina Beunk (1883- )
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Gerharda Brethouwer (1919-2006)  |
| Jan Gerhard Oonk (1874-1935)
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| Janna Berendina Droppers (1880-1965)
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| Gerrit Jan Oonk (1908-1990) |
| Albertus Willem Oonk (1912-1996) |
| Gerrit Jan Brethouwer (1908-1988)
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| Janna Oonk (1905-1997)
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