Sophia Dell (age 3) is recorded on an appendix to the 1767 census of Nieder-Monjou (No. 6) along with her stepfather, Johann Georg Gaus. A note records that the family relocated to the Volga German colony of Näb in 1768.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 206.