Nobertus Arzt (age 19) and his sister Maria Elisabeth (age 10) are recorded on the 1767 census of Ober-Monjou in Household No. 85. They had settled there on 5 March 1767.
The widow and children of Norbertus Arzt are recorded on the 1798 census of Ober-Monjou in Households No. Om45 & Om51.
The 1767 census records that Norbertus Arzt came from the German village of Ronneburg. [Since the Arzt family was Catholic, it is unlikely that this is the Calvinist village of Ronneburg in Hessen - but rather, the Ronneburg in Saxony.]
- 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): Om45, Om51.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 308.