Efrosinia Bettheusen (age 16½) and her sister Maria Elisabeth (age 9) are recorded on the 1767 census of Urbach in Household No. 54 along with their stepfather Johann Georg Eichhorn.
The 1767 census does not record from where the Bettheusen sisters came.
There are no known surviving male lines of this family among the Volga German colonies.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 283.