Children |
| 1. Roelina Johannes Balkema, b. 03 Sep 1877, Smallingerland, FR, NLD d. 11 Sep 1878, Smallingerland, FR, NLD (Age 1 year) |
| 2. Roelina Johannes Balkema, b. 03 Dec 1879, Smallingerland, FR, NLD |
| 3. Johanna Jantina Balkema, b. Abt 1882, Groningen, GR, NLD |
| 4. Jantje Johannes Balkema, b. 19 May 1884, Assen, DR, NLD d. 19 Aug 1884, Assen, DR, NLD (Age 0 years) |
| 5. Christina Johannes Balkema, b. 06 Feb 1886, Assen, DR, NLD |
| 6. Willem Johannes Balkema, b. 20 Mar 1887, Assen, DR, NLD d. 30 May 1888, Assen, DR, NLD (Age 1 year) |
| 7. Willem Johannes Balkema, b. 19 Sep 1888, Assen, DR, NLD d. 04 Oct 1888, Assen, DR, NLD (Age 0 years) |
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