He is married to Anna Gezina Schiphouwer.
They got married on March 2, 1935 at Emmen, Gemeente Emmen, Drenthe, Nederland , he was 30 years old.Source 3
Child(ren):
Johan Gerard Koiter | |||||||||||||||||||||||||||||||||||||
1935 | |||||||||||||||||||||||||||||||||||||
Anna Gezina Schiphouwer |
Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I20134.php