Widower Johannes Wolsborn [erroneously translated as Dormann in some documents], a merchant (Kaufmann), settled in the Volga German colony of Frank on 1 September 1767 and is recorded there on the 1767 census in Household No. 116.
His son Valentin is recorded on the 1798 census of Frank in Household No. Fk097.
The 1767 census records that Johannes Dormann came from the German region of Hamburg.
- 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): Fk097.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Der Göttinger Arbeitskreis, 1999): 439.