Johann Jost Harmann, a farmer, and his wife Eva Katharina arrived from Lübeck at the port of Oranienbaum on 10 August 1766 aboard the Russian pink Vologda under the command of Lieutenant Sergey Bartenyev.
They settled in the Volga German colony of Grimm and are recorded there on the 1767 census in Household No. 57.
Jost and his family are recorded on the 1775 census of Grimm in Household No. 133.
They are recorded on the 1798 census of Krasnoyar in Household No. Ks064. Jost's death in 1816 is recorded on the 1834 census of Krasnoyar leaving no known surviving male lines among the Volga German colonies.
Both the Oranienbaum passenger list and the 1767 census record that Johann Just Hartmann came from the German region of Isenburg.
- 1775 Grimm Census (Household No. 133).
- 1834 Krasnoyar Census (Household No. 58).
- 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): Ks064.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 81.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): #4910.