He is married to Catharina Adeleid - Anna Catharina - Catharina Lübbers.
They got married on April 25, 1837 at Wesuwe, Haren (Ems), Landkreis Emsland, Lower Saxony, Germany, he was 32 years old.Source 3
Witness: J.H.Nankmann Ackersm.z.Bersede J.Bippen Küster zu Wesuwe
Child(ren):
grandparents
parents
brothers/sisters
children

Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I29623.php
Nankmann Gerhard Schneidermeister nachts 2 Uhr 18780428 1878 Wesuwe 71 Jahre Brustfieber Nankmann Gerhard Hermann Gebben Helena
Nankmann zu Bersede 33 Jahre Gerhard, Lübbers zu Wesuwe 25 Jahre Catharina