Balthasar Kelker [sic], an orphan (age 18), settled in the Volga German colony of Dönhof on 18 June 1767. He is recorded there on the 1767 census in Household No. 99 along with his sister Margaretha (age 24) and her husband Kaspar Nuss.
Johann Balthasar Keller and his family are recorded on the 1798 census of Müller in Household No. Ml37.
In 1795, Johannes Keller moved from Müller to Dreispitz.
Johann Keller from Müller is recorded on the 1798 census of Dreispitz in Household No. Dr21.
The 1767 census does not record from where Balthasar Keller came.
- 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): Dr21, Ml37, Mv1809.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Der Göttinger Arbeitskreis, 1999): 368.