Johann Jakob Krug, a farmer, his wife Magdalena, and children (Louisa, age 17½; Johann [Jakob], age 13; Dorothea, age 10; Friedrika, age 4) arrived from Lübeck at the port of Oranienbaum on 18 June 1766 aboard the ship Die Perle under the command of Skipper Thomson.
The parents did not survive the journey between Oranienbaum and Saratov. The children settled in the Volga German colony of Kratzke on 7 August 1766 and are recorded there on the 1767 census in Household No. 9.
Jakob Krug and his family are recorded on the 1798 census of Kratzke in Household No. Kr11.
In 1821, Johann Michael Krug, son of Jakob Krug, moved from Kratzke to Dietel. Michael Krug and his family are recorded on the 1834 census of Dietel in Household No. 152.
Georg Heinrich Krug from Kratzke and his family are recorded on the 1857 Ährenfeld Census.
The Oranienbaum passenger list records that Johann Jakob Krug came from the German region of Pfalz.
- 1834 Dietel Census (Household No. 152).
- 1834 Kratzke Census (Household No. 26, 44, 65).
- 1857 Ährenfeld Census.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Kr11.
- Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767 Band 2 (Goettingen: Der Göttinger Arbeitskreis; 2001): 451.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): #1005.