In the parish records of Fränkisch-Crumbach, Johann Adam Fröhlich from Kirch-Beerfurth (3 kilometers south of Fränkisch-Crumbach), with his wife and children are included in a list of immigrants. Johann Adam Frölich had been born on 12 December 1739 in Eberbach, and married there on 25 April 1762 to Anna Barbara Hofferber, daughter of Hanss Leonhard Hofferber & Anna Elisabeth Karg. She was born 16 November 1730, and is a sister to Johannes Hofferber who also immigrated to Russia. A daughter, Dorothea, was born 28 October 1762 in Eberbach.
The Frölich family arrived in Frank on 1 September 1767 and are listed there on the 1767 Census in Household No. 92. Johann Adam is still living in Frank in 1798 when he is recorded on the census there in Household No. Fk125. Daughter Dorothea has married twice by 1798 and is living with her second husband in Frank in Household No. Fk082. Daughter Maria Magdalena who had been born during the journey to Russia is married to Nikolaus Lautenschlager and living in Yagodnaya Polyana in 1798 in Household No. Yp30.
- Gieg, Ella. "Neue Erkenntnisse zur Auswanderung nach Russland 1766."
- 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): Fk125.
- Parish records of Fränkisch-Crumbach.
- Parish records of Reichelsheim (LDS Film #1195016).
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 433.