Widow Katharina Klein and her son Konrad (age 18) are recorded on the 1767 census of Preuss in Household No. 134. They had settled there on 15 July 1767.
Konrad Klein and his family are recorded on the 1798 census of Preuss in Household No. Ps16.
Konrad's sons (Jakob, Wilhelm, and Anton) are each recorded on the 1834 census of Dehler in Households No. 50, 3, & 53, respectively.
The 1767 census records that Katharina Klein came from the German village of Freimersheim in the region of Bayern (Bavaria).
- 1834 Dehler Census (Households No. 3, 50, & 53).
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Ps69.
- Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767 Band 3 (Goettingen: Der Göttinger Arbeitskreis; 2005): 439.