Johannes Hoffmann was born on 18 September 1744 in Heckendalheim.
Johannes and his family settled in the Volga German colony of Rohleder on 28 August 1767. They are recorded there on the 1767 census in Households No. 13 & 47.
In 1788, Christian Hoffmann and his family moved from Louis to Rohleder. In 1795, Johann Peter Hoffmann moved from Rohleder to Graf.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Gf06, Rl08, Rl12, Rl25, Mv1583, Mv2450.
- Parish records of Heckendalheim.
- Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767 Band 4 (Goettingen: Der Göttinger Arbeitskreis; 2008): 50 & 59.