1. | Jan Koelstra was born on 22 Oct 1885 in Molkwerum, Friesland, Netherlands. Jan married Wiepkje Kool on 8 Mar 1913 in Gaasterland, Friesland, Netherlands. Wiepkje (daughter of Rein Berends Kool and Minke Robijns Feenstra) was born on 15 Mar 1887 in Oudega, Smallingerland, Friesland, Netherlands; died in 1952. [Group Sheet] [Family Chart] Children:
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