This person’s first name isn’t given because she was living when her information was entered into the Kelberg data file.
Jakob Karst and his wife were related twice as third cousins. Matthias Karst and Maria Katharine Kreuser were their gg grandparents as were Johann Michels and Susanna Lanser.

Source: K-J Tonner’s Kelberg data file.
Jakob and his wife were third cousins in two ways:
Matthias Karst and Maria Katharine Kreuser were their gg grandparents.
Johann Michels and Susanna Lanser were their gg grandparents.