Joseph Sowalter, a farmer, and his family settled in the Volga German colony of Rohleder on 14 June 1766. They are recorded there on the 1767 census in Household No. 25.
The 1767 census records that Joseph Sowalter came from the Pilsen region in Böhmen (Bohemia) [today Plzeň region, Czech Republic].
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 53.