Johannes Dahmer, a single farmer, arrived from Lübeck at the port of Oranienbaum on 4 July 1766 aboard the ship Der Junge Mathias under the command of Skipper David Wollert.
He married Anna Elisabeth and they settled in the Volga German colony of Dönhof on 18 June 1767 where they are recorded on the 1767 census in Household No. 55.
In 1794, Johannes Dahmer and his family moved from Dönhof to Reinwald.
Heinrich Dahmer from Dönhof and his family are recorded on the 1834 census of Franzosen.
Both the Oranienbaum passenger list and the 1767 census record that Johannes Dahmer came from the German region of Stolberg.
- 1834 Franzosen Census (Household No. 27).
- 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): Dh017, Rw46, Mv0496.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Der Göttinger Arbeitskreis, 1999): 355.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): #1870.