Children |
| 1. Harm Tonkens, b. 01 August 1889, Wildervank, Groningen, Nederland d. Date unknown |
| 2. Everdina Tonkens, b. 01 August 1890, Wildervank, Groningen, Nederland d. Date unknown |
| 3. Liefina Tallina Tonkens, b. 20 September 1891, Wildervank, Groningen, Nederland d. Date unknown |
| 4. Henderike Alberdine Jantine Tonkens, b. 18 November 1892, Wildervank, Groningen, Nederland d. Date unknown |
| 5. Tallina Tonkens, b. 17 March 1898, Wildervank, Groningen, Nederland d. Date unknown |
| 6. Hendrik Jan Tonkens, b. 01 August 1902, Wildervank, Groningen, Nederland d. Date unknown |
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