Wilhelmina Dillmann and her sister Rosina arrived from Lübeck at the port of Oranienbaum on 2 July 1772 aboard a ship under the command of Skipper Hartwig.
They settled in the Volga German colony of Pobochnaya on 4 July 1773.
They are recorded on a 1773 list of Pobochnaya settlers (No. 30).
There are no known surviving male lines of this Dillmann family among the Volga German colonies.
- 1773 Pobochnaya Census (No. 30).