| Male Jacob Hendrik Koppers |
| Birth | 12 Jul 1913 | Rotterdam, Zuid-Holland, The Netherlands |
| Death | 1 Jun 1992 | Rotterdam, Zuid-Holland, The Netherlands |
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| Female Adriana Cornelia Hermans |
| Birth | 25 Sep 1913 | Rotterdam, Zuid-Holland, The Netherlands |
| Death | 24 Jul 1997 | Rotterdam, Zuid-Holland, The Netherlands |
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