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Petronella Louwkamp
- ☼ 08-01-1867 (Hillegom [Zh])
- ✞ 15-01-1931 ('s- Gravenhage [Zh])
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Johannes Koelewijn
- ☼ 17-06-1853 (Alkemade [Zh])
- ✞ 03-04-1903 (Haarlem [Nh])
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Antoinette Koelewijn
- ☼ 21-08-1886 (Hillegom [Zh])
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Petrus Koelewijn
- ☼ 17-07-1889 (Haarlem [Nh])
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