Nikolaus Müller, a farmer, his wife Eva Katharina, daughter Elisabeth (age 5), and wife's sister Anna Elisabeth [surname not recorded] (age 17) are recorded on the 1767 census of Stephan in Household No. 2. They had settled in Stephan on 24 August 1767.
Nikolaus Müller and his family (sons: Johann Franz, age 29; Johannes, age 26; Johann Adam, age 22; Johann Christian, age 18; Johann Georg, age 16) are recorded on the 1798 census of Stephan in Household No. Sp24.
The death of Franz Müller, son of Nikolaus Müller, in 1831 is recorded on the 1834 census of Stephan in Household No. 38.
Christian Müller, son of Nikolaus Müller, from Stephan and his family are recorded on the 1857 census of Gnadentau.
In 1821, Johann Georg Müller, son of Franz Müller, relocated from Stephan to the colony of Balzer.
The Oranienbaum passenger list records that Nikolaus Müller came from the German region of Isenburg. The 1767 census records that Nikolaus Müller came from the German village of Engelrod.
- 1834 Balzer Census (Household No. 167).
- 1834 Stephan Census (Household No. 38).
- 1850 Stephan Census (Household No. 58).
- 1857 Gnadentau Census.
- 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): Sp24.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 221.