Heinrich Koch, a farmer, and his wife Maria Sabina settled in the Volga German colony of Jost on 5 July 1767. They are recorded there on the 1767 census in Household No. 29.
The 1767 census records that Heinrich Koch came from the German region of Berlin.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 201.