Konrad Jansen, a farmer, his wife Maria Margaretha, and sons (Nikolaus, age 18; Johannes, age 10) are recorded on the 1767 census of the Volga German colony of Schuck in Household No. 28. They had settled there on 18 July 1766.
The 1798 census records that Johannes Jansen from Schuck is living in the colony of Franzosen (Fz23). Johannes Jansen's death in 1825 is recorded on the 1834 census of Neu-Kolonie (Household No. 36).
The 1767 census records that Konrad Jansen came from the German region of Kurpfalz.
This Jansen family does not appear to have any surviving male descendant lines among the Volga German colonies.
-1834 Neu-Kolonie Census (Household No. 36).
- 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): Fz23.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 116.