Johann Geier (age 11) and his sister Maria Margaretha (age 5) are recorded on the 1767 census of Warenburg in Household No. 141 along with their stepfather Johann Peter Eng.
The 1767 census does not record from where the Geier siblings came.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Der Göttinger Arbeitskreis, 2008): 343.