He is married to Antje Achterop.
They got married on June 27, 1912 at Groningen (Gr), he was 31 years old.Source 4
Child(ren):
grandparents
parents
brothers/sisters
children
Antonius Koopmans | ||||||||||||||||||||||||||||||||||||
1912 | ||||||||||||||||||||||||||||||||||||
Antje Achterop | ||||||||||||||||||||||||||||||||||||
Geboorteregister Oldehove 1880
Overlijdensregister 1954, Dantumadeel
https://www.graftombe.nl/names/info/195341/koopmans
Huwelijksregister Groningen 1912