Johann Georg Pfeifer (age 17) and his sisters (Elisabeth, age 16; Philippina, age 8) are recorded on an appendix to the 1767 census of Paulskaya in Household No. 133 along with a note that they settled in the colony of Schaffhausen in 1768.
Georg Pfeifer and his family are recorded on the 1798 census of Schaffhausen in Household No. Sh22.
The 1767 census records that Johann Georg Pfeifer came from the German village of Sankt Goar.
- 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): Sh22.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 376.