Timeline Chart
1904--
1908--
1912--
1916--
1917--
| Birth--8 December 1909 - Groningen, Groningen, Groningen, Netherlands |
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| Birth--27 July 1911 - Groningen, Groningen, Groningen, Netherlands |
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| Birth--17 October 1912 - Warffum, Eemsmond, Groningen, Netherlands |
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