Children |
| 1. Hiltje Jans Folkertsma, b. 01 Oct 1887, Wolkwierum, Hemelumer Oldeferd, FR, NLD d. 19 Mar 1926, Enschede, OV, NLD (Age 38 years) |
| 2. Folkert Jans Folkertsma, b. 23 Nov 1888, Molkwierum, Hemelumer Oldeferd, FR, NLD |
| 3. Jacobus Jans Folkertsma, b. 20 May 1890, Oostdongeradeel, FR, NLD |
| 4. Grietje Jans Folkertsma, b. 12 Dec 1893, Oldeboorn, FR, NLD |
| 5. Saakje Jans Folkertsma, b. 05 Mar 1896, Utingeradeel, FR, NLD d. 18 Jul 1896, Utingeradeel, FR, NLD (Age 0 years) |
| 6. Jacobus Daniel Folkertsma, b. 05 Mar 1898, Oldeboorn, FR, NLD |
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