Peter Schuhmacher, a craftsman (Handwerker), and his wife Anna Maria settled in the Volga German colony of Mariental on 14 June 1766. They are recorded there on the 1767 census in Household No. 67.
In 1791, Johannes Schuhmacher moved from Mariental to Wittmann.
The 1767 census records that Peter Schuhmacher came from the German district of Linne.
- 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): Wm27, Mv1645.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 112.