Philipp Peter Rothau, a farmer, and his family arrived from Lübeck at the port of Oranienbaum on 9 August 1766 aboard the pink Slon under the command of Lieutenant Sergey Panov.
They settled in the Volga German colony of Norka on 15 August 1767 and are recorded there on the 1767 census in Household No. 64.
By 1798, Christian Rothau had moved from Norka to Stahl am Tarlyk. Christian Rothau and his family are recorded on the 1798 census of Stahl am Tarlyk in Household No. St36.
Both the Oranienbaum passenger list and the 1767 census record that Peter Rothau came from the German district of Kurpfalz.
- 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): Nr121, St36.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Der Göttinger Arbeitskreis, 2005): 246.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): #3997.