Widower Konrad Heindel, a farmer, and his children (Kartolia, age 20; Walpurgia, age 15; Stephan, age 14; Martin, age 10) are recorded on the 1767 census of Seelmann in Household No. 80. They had settled there on 24 August 1767.
Martin Heindel from Seelmann is recorded on the 1798 census of Brabander in Household No. Bn58.
The 1767 census records that Konrad Heindel came from the German village of Steinsdorf in the Bamberg region.
- 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): Bn58.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 163.