There are 2 Rau families that arrived from Lübeck at the port of Oranienbaum on 12 September 1766:
(1) Johann[es] Rau, a farmer, his wife Margaretha, and children (Wilhelm, age 11; Barbara, age 7; Michael, age 5; Kaspar, age ¼).
(2) Balthasar Rau, a farmer, and his wife Margaretha.
Both families settled in the Volga German colony of Leitsinger on 19 August 1767 and are recorded there on the 1767 census in Households No. 38 & 40, respectively [surname erroneously recorded as Rauch].
Following the destruction of Leitsinger, the Johannes Rau family resettled to the colony of Neu-Kolonie. They are recorded there on the 1798 census in Households No. Nk32 and Nk44.
Descendants of Balthasar Rau are believed to be recorded on the 1798 census in Household No. Nk15.
In 1826, Michael Rau (born 1797-1798) moved from Neu-Kolonie to Seelmann.
The 1767 census records that both Balthasar and Johann Rauch came from the German village of Sassanfahrt in the Bamberg district.
- 1834 Neu-Kolonie Census (Household No. 60).
- 1834 Seelmann Census (Household No. 82).
- 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): Nk15, Nk32, Nk44.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 69.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): #5799, #5805.