Johann Jakob Haag, a farmer, his wife Anna Maria, and son Johannes (age ¼) are recorded on the 1767 census of Volmer in Household No. 47. They had settled there on 18 July 1766.
The 1767 census records that Jakob Haag came from the German village of Alzey in the Kurpfalz region.
There are no known surviving male lines of this Haag family among the Volga German colonies.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 293.