Orphans siblings Katharina Schwartz (age 15) and Johann Valentin Schwartz (age 12), children of the deceased Valentin Schwartz, are recorded on the 1767 census of Grimm in Household No. 78 along with Heinrich Heintz, his wife Katharina, and Katharina's son Wilhelm Klein (age 15).
They are also recorded on the 1775 census of Grimm in Household No. 153 where both Wilhelm Klein and Valentin Schwartz are records as stepsons of Heinrich Heintz.
Valentin Schwartz is recorded on the 1798 census of Dönhof in Household No. Dh098.
The 1767 census records that Wilhelm Klein came from the German village of Lauterbach.
- 1775 Grimm Census (Household No. 153).
- 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): Dh098.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Der Göttinger Arbeitskreis, 2001): 83.