| 1. Johannes Franciscus Frederikus Volckmann, b. Thu 14 Jan 1897, Groningen, Groningen, Nederland d. Sun 28 Aug 1921, Groningen, Groningen, Nederland (Age 24 years) ▻ Geessien Hoeksema, m. Thu 09 Aug 1917 | | 2. Carel August Rudolph Volckmann, b. Cal 1898, Groningen, Groningen, Nederland d. Tue 22 Nov 1898, Groningen, Groningen, Nederland (Age 0 years) | | 3. Grietje Volckmann, b. Fri 26 Oct 1900, Groningen, Groningen, Nederland d. Thu 01 Aug 1901, Groningen, Groningen, Nederland (Age 0 years) | + | 4. Grietje Volckmann, b. Sat 28 Dec 1901, Groningen, Groningen, Nederland d. Wed 04 Feb 1970, Groningen, Groningen, Nederland (Age 68 years) ▻ Marten Kuikman, m. Thu 24 Jun 1920 | + | 5. Elisabeth Volckmann, b. Tue 17 Mar 1903, Groningen, Groningen, Nederland d. Yes, date unknown, Groningen, Groningen, Nederland ▻ Pieter Teunis Bakker, m. Thu 22 Sep 1921 | | 6. Gerrit Volckmann, b. Sun 22 Jan 1905, Groningen, Groningen, Nederland d. Sat 04 Mar 1905, Groningen, Groningen, Nederland (Age 0 years) | | 7. Jacobina Gezina Volckmann, b. Sun 22 Jan 1905, Groningen, Groningen, Nederland d. Sun 05 Mar 1905, Groningen, Groningen, Nederland (Age 0 years) | | 8. Johanna Volckmann, b. Aug 1911, Groningen, Groningen, Nederland d. Wed 16 Apr 1913, Groningen, Groningen, Nederland (Age 1 year) | |