Johann Kaßpar Probst & Anna Margaretha Seybold were married on 28 May 1765 in Roßlau.
Johann Kaspar Probst, a craftsman (Handwerker), and his wife Anna Margaretha settled in the Volga German colony of Reinhard on 15 July 1766. They are recorded there on the 1767 census in Household No. 14.
In 1783, Karl [Kaspar?] Probst moved from Reinhard to Saratov. By 1798, he was in Orenburg.
The 1767 census records that Johann Kaspar Probst came from the German region of Hanstedt.
There are no known surviving male lines of this family among the Volga German colonies.
- 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): Mv2327.
- Mai, Brent Alan and Dona Reeves-Marquardt. German Migration to the Russian Volga (1764-1767) (Lincoln, NE: American Historical Society of Germans from Russia, 2003): #835.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Der Göttinger Arbeitskreis, 2008): 23.