Friedrich Schäfer and his wife are recorded on the 1798 census of Orlovskaya in Household No. Or75.
The death of Friedrich Schäfer in 1831 is recorded on the 1834 census of Orlovskaya in Household No. 4.
- 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): Or75.