(1) He is married to Phenenna Elisabeth - Elisabeth Schlömer.
They got married on February 24, 1829 at Wesuwe, Haren (Ems), Landkreis Emsland, Lower Saxony, Germany, he was 30 years old.Source 4
Witness: Hieronymus Hartmann Ackersm.zu Altenberg Joseph Bippen Küster z.Wesuwe
Child(ren):
(2) He had a relationship with Maria Adeleidis - Maria Adelheid - Maria Adleid Pöttker.
Child(ren):
Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I8995.php
2034 22 Hartmann Johann Heinrich Heuermann Rütenbrock 76 Hartmann Johann Bernard Heinrich Robben Maria Helena Colonist Altenberge 18740611 18740615 Schlömer Maria Elisabeth Altersschwäche