Philipp Schäfer and his wife are recorded on the 1798 census of Beideck in Household No. Bd48.
There are no known surviving male lines of this Schäfer family among the Volga German colonies.
- 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): Bd48.