He is married to Anna Margaretha - Phenna Margaretha Hermes.
They got married on May 17, 1836 at Wesuwe, Haren (Ems), Landkreis Emsland, Lower Saxony, Germany, he was 32 years old.Source 4
Witness: Joh.Gerh.Hartmann Ackersm.zu Altenberg, Herbert Többen Ackersm.z.Schlabbrügge
Child(ren):
Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I9005.php
2045 33 Hartmann Hieronymus Colonist Altenberge 75 Hartmann Bernard Heinrich Robben Helena Colonist Altenberge 18741101 18741104 Hermes Margaretha Altersschwäche