Orphan Johann Just Hahn (age 4) is recorded on the 1767 census of Ernestinendorf in Household No. 25 along with the Johann Heinrich Kappes family.
The 1767 census does not record a relationship between the Kappes and Hahn families.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 402.