Johannes Kohler, a mason (Maurer), and his wife Christina settled in the Volga German colony of Degott on 18 July 1766. They are recorded there on the 1767 census in Household No. 7.
The 1767 census records that Johannes Kohler came from the German village of Schlettstadt in the Alsace region.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga: Economy, Population, and Agriculture (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Dg07.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 264.