Jakob Wagner and his wife Susanna settled in the Volga German colony of Mariental on 14 June 1766. He died and Susanna remarried to Peter Asselborn. She is recorded in Mariental on the 1767 census in Household No. 75.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 114.