He is married to Martha Soelmann.
They got married in the year 1954 at Emmen, Gemeente Emmen, Drenthe, Nederland, he was 29 years old.Source 4
Child(ren):
grandparents
parents
brothers/sisters
children
Heinrich Johannes - Hannes Hartmann | |||||||||||||||||||||||||||||||||||
1954 | |||||||||||||||||||||||||||||||||||
Martha Soelmann | |||||||||||||||||||||||||||||||||||

Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I23934.php
Heinrich Johannes Hartmann bidprentje Helena Adelheid (Leida) Berens-Hake https://www.online-begraafplaatsen.nl/graf/1324205/2049057/Heinrich-Johannes-Hartmann-1924-1975