In 1788, Mattias Schulz moved from Rothammel to Semenovka. Mattias Schulz and his family are recorded on the 1798 census of Semenovka in Household No. Se43.
- 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): Se43, Mv2486.