She is married to Johann Gerhard Biemslage.
They got married on October 25, 1870 at Hebelermeer, Twist, Landkreis Emsland, Lower Saxony, Germany, she was 23 years old.Source 2
Witness: Joh.Herm.Kupers Niederlangen Thecla Kathmann geb.Arens zu Geest
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Anna Gesina Kuper | |||||||||||||||||||||||||||||||||||
1870 | |||||||||||||||||||||||||||||||||||
Johann Gerhard Biemslage | |||||||||||||||||||||||||||||||||||

Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I3370.php
Biemslage Witwer zu Hebelermer Johann Gerhard, Kupers zu Niederlangen Anna Gesina