He is married to Catharina Overberg.
They got married on April 7, 1900 at Onstwedde, Stadskanaal, Groningen, Nederland , he was 22 years old.Source 2
Jan Hendrik Cramer | ||||||||||||||||||
1900 | ||||||||||||||||||
Catharina Overberg |
Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I14218.php
Valtherveen