Johann Leonhard Reis, a farmer, and his wife Anna Margaretha settled in the Volga German colony of Schwab on 12 September 1767. They are recorded there on the 1767 census in Household No. 37.
The 1767 census records that Johann Leonhard Reis came from the German village of Neubronn.
There are no known surviving male lines of this family among the Volga German colonies.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 135.