Jakob Bolwin (age 20) and his brother Philipp (age 14), stepsons of Heinrich Reith, are recorded on an appendix of Beauregard recruits to the 1767 census (No. 21).
The Reith family settled in the Volga German colony of Zürich, and the Bolwin brothers are assumed to have settled there with them.
The 1767 census does not record from where the Bolwin family came.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 353.