Widow Maria Hartmann (age 55) is recorded on the 1767 census of Kaneau in Household No. 90. She had settled there on 7 August 1767.
The 1767 census records that Maria Hartmann came from the German village of Oranienbaum in the region of Sachsen (Saxony).
There are no known survivng male lines of this Hartmann family among the Volga German colonies.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 263.