Georg Friedrich Schreiock, a farmer, his wife Sophia, and children (Regina Barbara, age 18; Anna Katharina, age 16; Anna Barbara, age 14; Johann Jeremias, age 7; Christina Barbara, age 5) immigrated to Denmark (Schleswig-Holstein) arriving in the city of Schleswig on 30 May 1761.
On 25 February 1764, they were released from the Danish colonies and joined the migration to Russia.
They settled in the Volga German colony of Dreispitz on 16 September 1766 and are recorded there on the 1767 census in Household No. 2.
The 1767 census records that Friedrich Schreiock came from the German village of Flüge [?] in the Kurpfalz region. The Eichhorns record that Georg Friedrich Schreiock came from the German region of Württemberg.
- 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-1513.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga: Economy, Population, and Agriculture (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Dr10, Dr43.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Der Göttinger Arbeitskreis, 1999): 371.