Regina Keiderling, widow of Johannes Keiderling, and their son Heinrich Jakob (age 17) are recorded on the 1798 census of Messer in Household No. Ms85.
Heinrich Jakob Keiderling and his family are recorded on the 1834 census of Messer in Household No. 184.
Heinrich Franz Keiderling, son of Heinrich Jakob Keiderling, and his son Johann Franz (age 10) are recorded on the 1857 census of Messer in Household No. 185.
- 1834 Messer Census (Household No. 184).
- 1857 Messer Census (Household No. 185).
- 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): Ms85.