Johann Jakob Grasmück came from the village of Rohrbach near Büdingen. He arrived in Balzer on 18 June 1767 and is recorded there on the 1767 census in Household No. 78.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 95.