Leonhard Kenner, a craftsman (Handwerker), and his wife Katharina settled in the Volga German colony of Herzog on 14 July 1766 and are recorded there on the 1767 census in Household No. 10.
The 1857 census of Graf records in Household No. 114 that Peter Kenner moved from Herzog to Graf in 1854.
The 1767 census records that Leonhard Kenner came from the German village of Roding in Bayern (Bavaria).
- 1857 Graf Census (Household No. 114).
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga: Economy, Population, and Agriculture (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Hr20.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 89.