Johann Ludwig Knaub and his widowed mother Anna Maria Dorothea immigrated to Russia. The widow Knaub remarried to Johann Heinrich Böse and the Böse/Knaub family settled in the Volga German colony of Merkel on 28 August 1766. They are recorded there on the 1767 census in Household No. 30.
- 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): Mr16.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 126.