Widower Johann Biristaw [?] Adwertin [?], a craftsman (Handwerker), and his daughter Elisabeth (age 8) are recorded on the 1767 census of Fischer in Household No. 40. They had settled there on 28 July 1767.
The 1767 census records that Johann Biristaw Adwertin came from the German region of Frankfurt am Main.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Der Göttinger Arbeitskreis, 1999): 418.