Franz Märker, a farmer, and his family settled in the Volga German colony of Graf on 10 June 1766. He is recorded there on the 1767 census in Household No. 2 along with his wife Margaretha, and son (probably from an earlier marriage) Christoph (age 12).
The 1767 census records that Franz Märker came from the German region of Würzburg.
- 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): Gf16.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 59.