(1) He is married to Maria - Marie - Mieke Koiter.
They got married on April 27, 1948 at Emmen, Gemeente Emmen, Drenthe, Nederland, he was 28 years old.Source 4
They got married on April 27, 1948 at Barger-Compascuum, Gemeente Emmen, Drenthe, Nederland, he was 28 years old.Source 5(2) He is married to Grietje Hulshof.
They got married on May 24, 1974 at Emmen, Gemeente Emmen, Drenthe, Nederland, he was 54 years old.Source 6
grandparents
parents
brothers/sisters
children
Johan Wilhelm - Willem Gustin | ||||||||||||||||||
(1) 1948 | ||||||||||||||||||
Maria - Marie - Mieke Koiter | ||||||||||||||||||
(2) 1974 | ||||||||||||||||||
Grietje Hulshof | ||||||||||||||||||

Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I20143.php
Johan Wilhelm Gustin bidprentje