There are multiple Müller lines in Frank.
Carl [sic] Ludwig Müller, a student (Studiosus) from the county of Hanau, & Anna Regina Hahn from the district of Düngen in the area of Franconia were married on 23 May 1766 in Lübeck. The marriage is recorded in the parish register of St. Jacob's Lutheran Church in Lübeck.
Johann [sic] Ludwig Müller from the district of Hannover and his wife, Anna Regina, settled in the Volga German colony of Frank on 1 September 1767. They are recorded there on the 1767 census in Household No. 104.
- Mai, Brent Alan and Dona Reeves-Marquardt, German Migration to the Russian Volga (1764-1767) (Lincoln, NE: American Historical Society of Germans from Russia, 2003): #228.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 436.