Johann Christoph Bender, a farmer (Ackerbauer), and his wife Katharina settled in the Volga German colony of Kratzke on 8 May 1767. They are recorded there on the 1767 census in Household No. 40.
Kaspar Bender from Kratzke and his family are recorded on the 1857 census of Ährenfeld.
The 1767 census records that Johann Christoph Bender came from the German village of Neilos [Cyrillic: Наилос] in the Württemberg region. Dr. Igor Plehve's translation of the 1767 census records this location as Nauleis near Wittenberg.
- 1857 Ährenfeld Census.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Kr13, Kr33.
- Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767 Band 2 (Goettingen: Der Göttinger Arbeitskreis; 2001): 458.