Children |
| 1. Harm Blaak, b. Mon 01 Mar 1886, Wildervank, Groningen, Nederland d. Sat 17 Jul 1886, Wildervank, Groningen, Nederland (Age 0 years) |
| 2. Elisabeth Blaak, b. Fri 21 Oct 1887, Wildervank, Groningen, Nederland d. Tue 07 May 1918, Groningen, Groningen, Nederland (Age 30 years) |
| 3. Jantje Blaak, b. Fri 21 Oct 1887, Wildervank, Groningen, Nederland d. Yes, date unknown |
| 4. Jantiena Roelina Blaak, b. Fri 21 Oct 1887, Wildervank, Groningen, Nederland d. Tue 11 Jan 1898, Wildervank, Groningen, Nederland (Age 10 years) |
| 5. Harm Blaak, b. Mon 24 Dec 1888, Wildervank, Groningen, Nederland d. Sun 20 Jan 1889, Wildervank, Groningen, Nederland (Age 0 years) |
| 6. Anna Maria Blaak, b. Sun 19 Jun 1892, Wildervank, Groningen, Nederland d. Wed 19 Oct 1892, Wildervank, Groningen, Nederland (Age 0 years) |
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