Joachim Friedrich Leist, his wife Regina, and their daughters (Susanna, age 5; Regina, age 1½) immigrated to Denmark (Schleswig-Holstein), arriving in the city of Schleswig on 6 June 1761.
They joined the migration to Russia. Friedrich, his new wife Anna Rosina, and daughters (Susanna, age 12; Sophia, age 8) settled in the Volga German colony of Fischer. Friedrich died and Anna Rosina remarried to Johann Jakob Froschmann. The combined Froschmann/Leist family is recorded on the 1767 census of Fischer in Household No. 18.
The Eichhorns record that Joachim Friedrich Leist came from the German region of Brandenburg. The 1767 census records that Anna Rosina came from the Prussian village of Sernow.
- Eichhorn, Alexander, Jacob & Mary Eichhorn. The Immigration of German Colonists to Denmark and Their Subsequent Emigration to Russia in the Years 1759-1766 (Deiningen, Germany: Drukerei und Verlag Steinmeier GmbH & Co. Kg, 2012): B-974.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 413.