Nikolaus Bollis, 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 Household No. 13.
Following the destruction of Chasselois, the Bollis family relocated to the colony of Louis.
In 1789, Peter Bollis moved from Louis to Graf.
The 1767 census records that Nikolaus Bollich [sic] came from the German region of Trier.
- 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): Gf35, Ls28, Ls34, Mv1591.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 253.