Widow Sibilla Katharina Letran is recorded on an appendix to the 1767 census of Katharinenstadt in Household No. 51 along with a note that she relocated to the colony of Bettinger in 1768.
The 1767 census records that Sibilla Katharina Letran came from the French village of Larressingle.
There are no known surviving male lines of this family among the Volga German colonies.
- Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767 Band 2 (Goettingen: Der Göttinger Arbeitskreis, 2001): 332.