Johann [Balthasar] Schubert, a single servant of Konrad Schmunk, arrived from Lübeck at the port of Oranienbaum on 4 July 1766.
He settled in the Volga German colony of Dobrinka on 20 June 1767 and is recorded there on the 1767 census in Household No. 91.
The 1767 census records that Balthasar Schubert came from the German village of Kelgin [?] near Strumbach.
- 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): Db06.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 339.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): #1838.