Johann Conrad Werth, son of Johann Heinrich Werth, was baptized in Spielberg on 24 December 1747. His sister, Eva Elisabeth, had been baptized there on 7 April 1745.
Johann Conrad and his sister, who had married Conrad Preisendorf, immigrated to Russia arriving from Lübeck at the port of Oranienbaum on 8 August 1766 aboard a pink under the command of Lieutenant Moisey Davydov.
He settled in the Volga German colony of Norka on 18 August 1767 and is recorded there on the 1767 census in Household No. 24 along with his sister and brother-in-law Konrad Priesendorf.
- 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): Nr087.
- Parish records of Spielberg.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 235.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): #4145.