There are two Graf families in Ober-Monjou. Their relationship to each other, if any, needs further research.
(1) The widow and son of Johannes Graf are recorded on the 1798 census of Ober-Monjou in Household No. Om06.
(2) Christoph Graf, son of the deceased Johann Graf, and his family are recorded on the 1798 census of Ober-Monjou in Household No. Om27.
- 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): Om06, Om27.