1. | Jan Jans Kooij Family/Spouse: Jitske Douwes Sietsma. [Group Sheet] [Family Chart]
Children:
- Marijke Jans Kooij was born about 1850 in Boornbergum, Smallingerland, FR, NLD; died on 13 Feb 1894 in Utingeradeel, FR, NLD.
- Fokje Jans Kooij was born on 23 Sep 1852 in Boornbergum, Smallingerland, FR, NLD; died on 23 Apr 1922 in no. 309, Oldeboorn, Utingeradeel, FR, NLD.
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