In 1770, widow Sabina Barbara Bernhardt and her children moved from Hockerberg to Orlovskaya.
In 1778, Johann Bernhard moved from Orlovskaya to Katharinenstadt.
In 1785, Georg Bernhard moved from Orlovskaya to Katharinenstadt.
Heinrich Bernhard from Orlovskaya and his family are recorded on the 1798 census of Katharinenstadt in Household No. Ka060.
- 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): Ka060, Mv0861, Mv2143, Mv2161.