Johann Philipp Gemsemer and his wife are recorded on the 1798 census of Galka in Household No. Gk44.
The death of Philipp Gemsemer in 1838 is recorded on the 1850 census of Galka in Household No. 199.
There are no known surviving male lines of this family among the Volga German colonies.
- 1834 Galka Census (Household No. 161).
- 1850 Galka Census (Household No. 199).
- 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): Gk44.