Gottlieb Friedrich Kerbs, a weaver (Weber), and his family settled in the Volga German colony of Holstein on 26 May 1765. They are recorded there on the 1767 census in Household No. 14.
In 1788, Johann Heinrich Kerbs moved from Holstein to Galka. In 1797, Jakob Kerbs and his family moved from Holstein to Pokrovsk (Engels).
The 1767 census records that Gottlieb Friedrich Kerbs came from the German village of Frohburg in the region of Sachsen (Saxony).
- 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): Gk02, Ho18, Mv0899.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 129.