There are two Wolf families from Mannheim that settled in the Volga German colony of Graf on 10 January 1766.
(1) Georg Wolf, a farmer, is recorded on the 1767 census in Household No. 36 along with Agatha, widow of Johann Adam Haaley, and her children [some of whom are probably stepchildren] (Maria Margaretha Haaley, age 18; Peter Haaley, age 12; Leonhard, age 3).
(2) Heinrich Wolf, a farmer, his wife Anna Katharina, and children (Johann Jakob, age 16; Johann Georg, age 13), are recorded on the 1767 census of Graf in Household No. 37. In 1787, Valentin Wolf moved from Graf to Rohleder. [He may or may not be connected to these Wolf families.] \
The 1767 census records that both Georg Wolf and Heinrich Wolf came from the German village of Mannheim in the Kurpfalz 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): Gf46, Rl17, Mv0720.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 68, 69.