He is married to Anna Mechtildis Tecla - Tecla Niemann.
They got married on April 26, 1809 at Wesuwe, Haren (Ems), Landkreis Emsland, Lower Saxony, Germany, he was 39 years old.Source 3
Witness: H.Henricus Ottens B.Henricus Ottens
Child(ren):
grandparents
parents
brothers/sisters
children

Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I32724.php
66 in 1836
Otten Hermann Otto Ackersmann 18360223 1836 Altenharen 66 Jahre Ottens Hermann Henrich nicht bekannt Niemann Tecla Ackersfrau
Ottens aus Altenharen Hermannus Otto, Nimann aus Altenharen Anna Mechtildis Tecla