In 1788, Joseph Beirwert rom Pfeifer to Leichtling.
Peter Beirwert from Leichtling and his family are recorded on the 1857 census of Marienfeld.
Joseph Bahrwit and his family are recorded on the 1798 census of Leichtling in Household No. Lg25.
- 1857 Marienfeld Census.
- 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): Lg25, Mv2248.