Johann Melchior Letz (age 2) is recorded on the 1767 census of Nieder-Monjou in Household No. 37 along with his stepfather Nikolaus Spahn.
The 1767 census does not record from where Johann Melchior Letz came.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 193.