He is married to Catharina Posthuma.
They got married on June 29, 1916 at Emmen, Gemeente Emmen, Drenthe, Nederland, he was 25 years old.Source 3
Child(ren):
grandparents
parents
brothers/sisters
children
Berend Duinkerken | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1916 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Catharina Posthuma | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||

Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I23994.php