Orphan Agnessa Koch (age 16) is recorded on the 1767 census of Philippsfeld in Household No. 15 along with the Johann Tischer family. The 1767 census does not record a relationship between the Koch and Tischer families.
The 1767 census does not record from where Agnessa Koch came.
There are no know surviving male lines of this Koch family among the Volga German colonies.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 406.