Nikolaus Hornung and his family are recorded in the Volga German colony of Hussenbach. In 1791, Nikolaus Hornung moved from Hussenbach to Sarepta. In 1792, Johann Georg Hornung moved from Hussenbach to Bauer.
The parish register of Sarepta records that Nikolaus Hornung received permission to move from Hussenbach to Sarepta on 5 July 1791.
- 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): Br27, Mv1059, Mv1060.
- Parish records of Sarepta.