The widow of Johann Adam from Dehler is recorded on the 1798 census of Sewald in Household No. Sd31 along with their daughter Susanna (age 13).
There are no known surviving male lines of this Adam family among the Volga German colonies.
- 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): Sd31.