Johann Wiltheis, a farmer, his wife Maria, and son Johann (age 3) arrived from Lübeck at the port of Oranienbaum on 19 July 1766 aboard a galliot named Frau Catharina under the command of Skipper Johann Joachim Jenßen.
Johannes Wildeiss, his wife Margreta, and son Johannes (age 3¾) are recorded on the list of colonists being transported from St. Petersburg to Saratov in 1767.
Johannes Wiltheis, a farmer, and his wife Maria are recorded on an appendix to the 1767 census of Paulskaya in Household No. 49 along with orphan Johannes Schreitz (age 9). The 1767 census does not record a relationship between the Schreitz and Wiltheis families.
The Wiltheis family is recorded on the 1798 census of Basel in Household No. Bs28.
The Oranienbaum passenger list records that Johann Wiltheis came from the German region of Solms. The 1767 census records that he came from the German village of Seeheim.
- Idt, Andreas and Georg Rauschenbach. Auswanderung deutscher Kolonisten nach Russland im Jahre 1766 (Moscow: Idt & Rauschenbach, 2019): 32.
- Idt, Andreas and Georg Rauschenbach. Deutsche Kolonisten im Jahr 1766 in Oranienbaum und in den Siedlungsorten: Die Kuhlberg-Listen (Moscow: Idt & Rauschenbach, 2024): 504.
- 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): Bs28.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Der Göttinger Arbeitskreis, 2005): 361.
- Pleve, Igor. Lists of Colonists to Russia in 1766 (Saratov: State Technical University, 2010): #3960.
- Rauschenbach, Georg. Deutsche Kolonisten auf dem Weg von St. Petersburg nach Saratow: Transportlisten von 1766-1767 (Moscow: G.V. Rauschenbach, 2017): #6070-6072.
Brent Mai