Wilhelm Grünewald, a farmer, his wife Elisabeth, and children (Johann, age 20; Elisabeth, age 18; Georg, age 10; Friedrich, age 3) are recorded on an appendix to the 1767 census of Boisroux in Household No. 42.
Son Johannes and his family are recorded on the 1798 census of Meinhard in Household No. Mn13.
In 1786, Friedrich Grünewald moved from Meinhard to Shaffhausen. He is recorded there on the 1798 census in Household No. Sh28.
The 1767 census records that Wilhelm Grünewald came from the German region of Hessen.
- 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): Mn13, Sh28, Mv1658.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 170.