Andreas Marx, a farmer, his wife Katharina, and son Ludwig (age 8) are recorded on the 1767 census of Bettinger in Household No. 17. They had settled there on 3 August 1767.
The 1767 census records that Andreas Marx came from the German region of Darmstadt.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Bt15.
- Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767 Band 1 (Goettingen: Der Göttinger Arbeitskreis, 1999): 135.