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Maartje van Egmond
- ☼ 01-11-1859 (Sassenheim [Zh])
- ✞ 21-03-1943 (Sassenheim [Zh])
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Cornelis van Nieuwkoop
- ☼ 27-11-1859 (Alkemade [Zh])
- ✞ 15-12-1903 (Alkemade [Zh])
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Johanna van Nieuwkoop
- ☼ 23-07-1896 (Alkemade [Zh])
- ✞ 14-01-1900 (Alkemade [Zh])
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Arie van Nieuwkoop
- ☼ 25-02-1899 (Alkemade [Zh])
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