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):
grandparents
parents
brothers/sisters
children
Johann Bernhard Koiter | |||||||||||||||||||||||||||||||||||||||
1920 | |||||||||||||||||||||||||||||||||||||||
Maria Helena - Helena Suelmann | |||||||||||||||||||||||||||||||||||||||



Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I20133.php
Johann Bernhard Koiter bidprentje
gezinskaart Koiter-Sulmann scan 689232 p9313 1918-1936
Vertrokken personen Emmen 1918-1925 Koiter-Sulmann scan 701147