 Stanevičius then moved to Raseiniai and lived in the Plater estate, managing their private library.During the Uprising of 1830, Stanevičius traveled to Königsberg where he met with Ludwig Rhesa and collected materials for future publications.After the death of his patron Jerzy Plater in 1836, Stanevičius moved to the estate of Jerzy's brother Kazimierz Plater in Stemplės.