(1) He is married to Anna Margaretha - Margaretha Ostermann.
They got married on February 18, 1890 at Meppen, Meppen, Landkreis Emsland, Lower Saxony, Germany, he was 50 years old.Source 4
Witness: Backs Bernard Eigener in Haren, Ostermann ELisabeth Witwe Arbeiter Gerhard Kone in Meppen
Child(ren):
(2) He had a relationship with Maria Elisabeth - Euphemia Elisabeth Hessel.
Child(ren):
grandparents
parents
brothers/sisters
children

Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I46283.php
73 Jahre 5 Monate 15 Tage in 1913
ouders: Backs Bernard Hermann Heuermann, Ross Margareta zu Tundel