He is married to Maria Gezina Theijken.
They got married on October 20, 1904 at Emmen, Gemeente Emmen, Drenthe, Nederland, he was 26 years old.Source 3
Child(ren):
grandparents
parents
brothers/sisters
children
Johannes Hendrik Koop | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1904 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Maria Gezina Theijken | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||


Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I9697.php
gezinskaart Koop-Theijken scan 689328 1918-1936