Hans Jakob Weirich, 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. 19.
Following the destruction of Chasselois, the Weirich family relocated to the colony of Graf.
In 1789, Nikolaus Weirich moved from Graf to Louis. In 1789, Peter Weirich moved from Graf to Mariental.
The 1767 census records that Hans Jakob Weirich came from the German village of Bernkastle in the Trier 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): Gf27, Ls23, Mt26, Mv0721, Mv0730.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 254.