Timeline Chart
1905--
1908--
1912--
1916--
1920--
1924--
1928--
1932--
1936--
1940--
1941--
| Birth--17 June 1910 - Groningen, Groningen, Groningen, Netherlands |
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| Birth--17 July 1912 - Helpman, Haren, Groningen, Netherlands |
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| Marriage--17 December 1936 - Haren, Haren, Groningen, Netherlands (Age 24) |
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| Marriage--17 December 1936 - Haren, Haren, Groningen, Netherlands (Age 26) |
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