He is married to Maria Helena - Helena Suelmann.
They got married on November 20, 1920 at Emmen, Gemeente Emmen, Drenthe, Nederland , he was 23 years old.Source 4
Child(ren):
Johann Bernard Koiter | |||||||||||||||||||||||||||||||||||||||
1920 | |||||||||||||||||||||||||||||||||||||||
Maria Helena - Helena Suelmann |
Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I20133.php