Children |
| 1. Pieter Werkema, b. Fri 24 Aug 1900, Houwerzijl, Ulrum, Groningen, Nederland d. Mon 23 Feb 1981, Houwerzijl, Ulrum, Groningen, Nederland (Age 80 years) |
| 2. Mechiel Werkema, b. Sat 12 Apr 1902, Houwerzijl, Ulrum, Groningen, Nederland d. Sat 03 May 1902, Houwerzijl, Ulrum, Groningen, Nederland (Age 0 years) |
| 3. Mechiel Werkema, b. Fri 20 Nov 1903, Houwerzijl, Ulrum, Groningen, Nederland d. Yes, date unknown |
| 4. Margrietje Martje Werkema, b. Mon 24 Sep 1906, Houwerzijl, Ulrum, Groningen, Nederland d. Thu 20 Jun 1907, Ulrum, Groningen, Nederland (Age 0 years) |
| 5. Margrietje Martje Werkema, b. Tue 14 Apr 1908, Houwerzijl, Ulrum, Groningen, Nederland d. Fri 29 Dec 2000, Groningen, Groningen, Nederland (Age 92 years) |
| 6. Martje Margrietje Werkema, b. Mon 20 Dec 1909, Houwerzijl, Ulrum, Groningen, Nederland d. Tue 26 Nov 2002 (Age 92 years) |
| 7. Anje Martha Werkema, b. Tue 19 Mar 1912, Houwerzijl, Ulrum, Groningen, Nederland d. Sat 11 Dec 1993 (Age 81 years) |
| 8. Jacoba Maria Werkema, b. Abt 1914, Houwerzijl, Ulrum, Groningen, Nederland d. Mon 26 Jun 1950, Groningen, Groningen, Nederland (Age 36 years) |
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