Johann Heinrich Hoffmann (from Langenbrombach) married Margaretha Elisabetha Göttmann (from Kirchbrombach) in Michelstadt on 22 October 1765. The couple arrived in Russia on 15 September 1766. They settled in Frank and are reported there, along with their infant daughter Maria Catharina, in Frist Settler's List Family #90.
- New Findings about the Immigration to Russia – 1766, by Ella Gieg, circa 2008 (translation by Richard A. Kraus)
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010) p. 384
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): p. 433