In 1786, widow Elisabeth Bock and her children moved from Zug to Schaffhausen.
Karl Bock and his mother are recorded on the 1798 census of Schaffhausen in Household No. Sh14.
Karl Bock and his family are recorded on the 1834 census of Kaneau in Household No. 9.
- 1834 Kaneau Census (Household No. 9).
- 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): Sh14, Mv3061.