Johann Gottlieb Leopold Martinus, a carpenter (Zimmermann), and his family arrived from Lübeck at the port of Oranienbaum on 4 July 1766 aboard the English frigate Love & Unity under the command of Skipper Thomas Fairfax.
They settled in the Volga German colony of Kaneau on 7 June 1767 and are recorded there on the 1767 census in Household No. 6.
In 1786, Leopold Martins and his family moved from Kaneau to Schaffhausen.
The 1767 census records that Johann Gottlieb Leopold Martinus came from the German village of Oranienbaum in the region of Dessau.
- 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): Sh27, Mv1155.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 244.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): #1240.