Christoph Seibel, a farmer, his wife Margaretha, and daughter Dorothea (age 5-months) are recorded on the 1767 census of Bettinger in Household No. 23. They had settled there on 3 August 1767.
The 1767 census records that Christoph Seibel came from the German village of Gerthausen.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Bt23.
- Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767 Band 1 (Goettingen: Der Göttinger Arbeitskreis, 1999): 136.