Johannes Molidor, a farmer, and his wife Julianna settled in the Volga German colony of Leichtling on 14 May 1767. They are recorded there on the 1767 census in Household No. 6.
In 1852, Michael Molidor and his family moved from Leichtling to Marienfeld.
The 1767 census records that Johannes Molidor came from the German region of Saarbrücken.
- 1857 Leichtling Census (Household No. 66).
- 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): Lg05.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 52.