Georg Koch, a farmer, his wife, and his stepdaughter (surname not recorded) settled in the Volga German colony of Rohleder on 14 June 1766. They are recorded there on the 1767 census in Household No. 18.
The 1767 census records that Georg Koch came from the German region of Bamberg.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 52.