Jakob Moritz is recorded on the 1798 census of Enders in Household No. En38. His death in 1817 is recorded on the 1834 Census of Enders in Household No. 45.
It is possible that he is the Jakob Dietrich (surname not recorded), stepson of Zorn Endersen, on the 1767 census of Enders in Household No. 32.
- 1834 Census of Enders (Household No. 45).
- 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): En28, En32.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 390.