| Male Ferdinand Jan Cornelis Marie van Koolwijk |
| Birth | 23 Apr 1952 | Nijmegen, Gelderland, The Netherlands |
| Death | 26 Okt 2013 | Driebergen, Utrecht, The Netherlands |
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| Female L. MARTHERUS |
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| Father | Mattheus Adriaan John Martherus | F4555 Group Sheet | |
| Mother | Poppie von HAACK | F4555 Group Sheet | |