Georg Adam Riffel, a farmer, and his wife immigrated to Denmark (Schleswig-Holstein), arriving in Flensburg on 17 July 1761.
They left the Danish colonies on 24 April 1765 and joined the migration to Russia. Georg Adam Riffel and his family settled in the Volga German colony of Shcherbakovka on 15 June 1765. They are recorded there on the 1767 census in Household No. 38.
In 1793, Christian Riffel moved from Shcherbakovka to Galka.
The 1767 census records that Georg Adam Riffel came from the German village of Lanken. The Eichhorns record that Georg Adam Riffel came from the German region of Baden-Durlach.
- Eichhorn, Alexander, Jacob & Mary Eichhorn. The Immigration of German Colonists to Denmark and Their Subsequent Emigration to Russia in the Years 1759-1766 (Deiningen, Germany: Drukerei und Verlag Steinmeier GmbH & Co. Kg, 2012): B-1347.
- 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): Gk07, Sv61, Mv2781.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 254.