Johann Konrad Henlein, a miller (Müller), and his wife Elisabeth settled in the Volga German colony of Bettinger on 3 August 1767. They are recorded there on the 1767 census in Household No. 29.
The 1767 census records that Johann Konrad Henlein came from the German village of Hilpoltstein.
- Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767 Band 1 (Goettingen: Der Göttinger Arbeitskreis, 1999): 137.