Johann Georg Krämer, a farmer, and his wife Elisabeth are recorded on an appendix to the 1767 census of Paulskaya in Household No. 106 along with a note that they settled in the Volga German colony of Schaffhausen in 1768.
Konrad Krämer, believed to be the son of Johann Georg Krämer, and his wife are recorded on the 1798 census of Schaffhausen in Household No. Sh19.
Konrad Krämer is recorded on the 1834 census of Schaffhausen in Household No. 3.
There are no known surviving male lines of this Krämer family among the Volga German colonies.
- 1834 Schaffhausen Census (Household No. 3).
- 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): Sh19.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 371.