Question: When was the Holy Roman Emperor died who awarded Ferenc József the title of "Fürst von Koháry de Csábrág et Szitnya"?
Sentence (from "List of monarchs of Prussia"): When the main line of Prussian Hohenzollerns died out in 1618, the Duchy passed to a different branch of the family, who also reigned as Electors of Brandenburg in the Holy Roman Empire.
Relevant evidence: No