Karl Ernst Blass and his family arrived from Lübeck on 15 September 1766 aboard the ship Der Junge Heinrich under the command of Skipper Heinrich Niemann. They settled in the Volga German colony of Katharinenstadt.
His widow is recorded on the 1798 census of Katharinenstadt in Household No. Ka047.
On the 1798 census of Katharinenstadt, Maria's first husband is recorded as Ernst Wormsbecher, but it is believed that the "Ernst" belongs with her second husband, as the Wormsbecher husband's name was Jakob.
- 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): Ka047.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): #7276.