Heinrich Keller, his wife Katharina, and their children (Katharina, age 7½; Johann Georg, age 4½) settled in the Volga German colony of Schilling. They are recorded there on the 1775 census in Household No. 7.
- 1775 Census of Schilling (No. 7)
- 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): Sg014.