In 1787, Konrad Gottfried Niederquell moved from Schulz to Graf.
Konrad Niederquell from Schulz is recorded on the 1798 census of Graf in Household No. Gf11 along with his brothers (Gottfied, age 20; Heinrich, age 6) and mother Katharina Leidecker née Isferdin [?].
Philipp Niederquell and his family are recorded on the 1798 census of Schulz in Household No. Sz15.
- 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): Gf11, Sz15, Mv2665.