Johannes Riehl (age 16) is recorded on the 1767 census of Kautz in Household No. 26 along with his stepfather Heinrich Dewald. He is recorded on the 1798 census of Kautz in Household No. Kz04.
- 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): Kz04.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 339.