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Male  Johannes Koopmans
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1907--
1908--
1910--
1912--
1914--
1916--
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1922--
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1926--
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1936--
Birth--29 February 1912 - Groningen, Groningen, Groningen, Netherlands
Marriage--8 January 1931 - Groningen, Gronngen, Groningen, Netherlands (Age 18)