Kaspar Riesch and his family settled in the Volga German colony of Mariental. Kaspar died and his widow remarried to Jakob Müller. She is recorded with the Müller family on the 1767 census of Mariental in Household No. 82.
The 1767 census records that son Christoph Riesch came from the village of Busendorf in France.
- 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): Mt72.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 116.