Michael Brost, a miller (Müller), his wife Maria Magdalena, and son Jakob (age 2) are recorded on the 1767 census of Volmer in Household No. 31 along with orphan Peter Sieben (age 17). The 1767 census does not record a relationship between the Brost and Sieben families. They had settled in Volmer on 18 July 1767.
The 1767 census records that Michael Brost came from the German village of Burg in the Kurmainz region.
- 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): Vm01.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 290.