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Gerrard Herman Osterkamp
- ☼ 15-02-1845 (Noord-Waddinxveen [Zh])
- ✞ 10-06-1914 (Aalsmeer [Nh])
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Johanna Peeters
- ☼ 21-11-1837 (Melissant [Zh])
- ✞ 15-02-1917 (Aalsmeer [Nh])
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Martina Osterkamp
- ☼ 23-11-1877 (Haarlemmermeer [Nh])
- ✞ 27-08-1878 (Haarlemmermeer [Nh])