She is married to Gerd Jan - Johan Gerhard - Jan Gerd - Jan Geert ter Haar.
They got married on January 17, 1843 at Twist, Landkreis Emsland, Lower Saxony, Germany, she was 26 years old.Source 3
Witness: Wewers Hermann Heinrich Köster zu Twist, Sanning Leopold Heüermann zu Twist
Child(ren):
grandparents
parents
brothers/sisters
children
Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I41855.php
AKTE BEVOLKINGSREGISTER MARIA CATHARINA MARS
http://alledrenten.nl/akte/maria-catharina-mars/eef2ae58-b061-4f40-87c9-c6fd83f4afb6
ter Haar Johan Gerhard 1819 Ringe landbouwer
Mars Maria Catharina 1816 Dalen
ter Haar Hermannus Gerhardus 1845
ter Haar Johan Bernard 1847
ter Haar Maria Helena 1842 schoolleerling
ter Haar Euphemia Aleida 14-11-1857