Nikolaus Straat, a wool carder (Wollschläger) and his wife Gertrude settled in the Volga German colony of Seelmann on 16 August 1767. They are recorded there on the 1767 census in Household No. 33.
The 1767 census records that Nikolaus Straat came from the German village of Siersburg [?] in the Trier region.
There are no known surviving male lines of this family among the Volga German colonies.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 155.