Matthias Schönberger, a farmer, and his family settled in the Volga German colony of Chasselois on 2 August 1766. They are recorded there on the 1767 census in Households No. 8 & 9.
Following the destruction of Chasselois, the Schönberger family resettled to the colony of Mariental.
The 1767 census records that Matthias Schönberger came from the French village of Sierck.
- 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): Mt61.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 251, 252.