Orphan Heinrich Koch (age 19) is recorded on the 1767 census of Kraft in Household No. 15 along with his sister Margaretha and her husband Kaspar Krepp.
The 1767 census does not record a location from which Heinrich Koch came.
- Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767 Band 2 (Goettingen: Der Göttinger Arbeitskreis; 2001): 397.