Bonze Zeilstra, born in Surhuisterveen on February 22, 1899, son of Pieter Bonzes Zeilstra and Johanna Douwes Procee.


Bonze was married in Borger on August 29, 1921, at the age of 22 to (and divorced in Assen on July 11, 1947 from)
Everdina Tieks (aged approximately 20 years), born in Wildervank circa 1901, daughter of Roelof Tieks and Everdina Naaijer.