The baptismal and confirmation records of Heinrich Zitzer and Elisabeth Leim have been located in the parish records of Usingen in the Principality of Nassau-Usingen.
They arrived at the port in Oranienbaum aboard the English frigate Love and Unity on 23 December 1766. They settled in Katharinenstadt where they are recorded on the 1798 Census in Household No. Ka064.
- Mai, Brent Alan. <em>1798 Census of the German Colonies along the Volga: Economy, Population, and Agriculture</em> (Lincoln, NE: American Historical Society of Germans from Russia, 1999): 548.
- Pleve, Igor. Lists of Colonists to Russia in 1766 (Saratov: Saratov State Technical University, 2010): 345.