Heinrich Gundrum is recorded on the 1798 census of Seelmann in Household No. Sm55.
His death in 1805 is recorded on the 1811 census of Seelmann in Household No. 55.
There are no known surviving male lines of this family among the Volga German colonies.
- 1811 Seelmann Census (Household No. 55).
- 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): Sm55.