Grigorius Robert, a starch maker (Stärkemacher), and his wife Katharina Glauwitz settled in the Volga German colony of Katharinenstadt on 3 August 1767. They are recorded there on the 1767 census in Household No. 111.
In 1785, Gregorius Robert moved from Katharinenstadt to the Caucasus.
The 1767 census records that Robert Grigorius came from the town of Liège and that Katharina Glauwitz came from the town of Königsberg in Prussia.
- 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): Ka066, Mv1179.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 300.