Johann Peter Rothgang, a farmer, his wife Anna Margaretha, and children (Johann Heinrich, age 14; Anna Maria, age 9) are recorded on the 1767 census of Laub in Household No. 4. They had settled there on 12 July 1767.
The 1767 census records that Johann Peter Rothgang came from the German village of Ober-Ramstadt in the Darmstadt region.
There are no known surviving male lines of this Rothgang family among the Volga German colonies.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 20.