Orphan Ludwig Fries settled in the Volga German colony of Schulz. He is recorded there on the 1767 census in Household No. 11 along with the Johann Christoph Pietsch family. The 1767 census does not record a relationship between the Fries and Pietsch families.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 122.