Jakob Schwagerus, his wife Katharina, son Jakob, and stepchildren [surname Kerbach] are recorded on the 1775 census of Grimm in Household No. 28.
Son Jakob and his descendants are recorded on the 1798 census of Grimm in household No. Gm173.
Before the 1816 census, the Schwagerus family relocated to the Caucasus, settling in the German colony of Karras.
- 1775 Grimm Census (Household No. 28).
- 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): Gm173.