Martin Michael Maas, a craftsman (Handwerker), and his wife Katharina settled in the Volga German colony of Schäfer on 1 August 1766. They are recorded there on the 1767 census in Household No. 34.
The 1767 census records that Martin Michael Maas came from the German region of Berlin.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 98.