Widow Christina Schäfer and her sons (Johannes, age 13½; Joachim, age 12½; Johann Georg, age 9½; Georg Konrad, age 6) are recorded on the 1775 census of Schilling in Household No. 8.
In 1788, Joachim Schäfer moved from Schilling to St. Petersburg.
- 1775 Census of Schilling (No. 8).
- 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): Sg007, Sg009, Mv2551.