There are two Jerger families that settled in the Volga German colony of Dietel on 1 July 1767. Their relationship to each other is not recorded on the 1767 census, but they are believed to be brothers.
(1) Georg Jerger, a farmer, and his wife Katharina arrived from Lübeck at the port of Oranienbaum on 25 July 1766 aboard a Russian packet-boat under the command of Lieutenant Sornev. They are recorded on the 1767 Dietel census in Household No. 43. The 1767 census records that Georg Herger came from the German village of Zenbar in the Alsace region.
(2) Adam Jerger, a tailor (Schneider), and his wife Elisabeth arrived from Lübeck at the port of Oranienbaum on 25 July 1766 aboard a Russian packet-boat under the command of Lieutenant Makkensy. They are recorded on the 1767 census of Dietel in Household No. 15. The 1767 census records that Adam Jerger came from the region of Alsace.
- 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): Dt11, Dt49.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 285, 295.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): #2455, #2706.