Question: When was the Holy Roman Emperor died who awarded Ferenc József the title of "Fürst von Koháry de Csábrág et Szitnya"?
Sentence (from "Karl Anselm, 4th Prince of Thurn and Taxis"): Karl Anselm served as "Prinzipalkommissar" at the Perpetual Imperial Diet in Regensburg for Joseph II, Holy Roman Emperor and Francis II, Holy Roman Emperor from 1773 to 1797.
Relevant evidence: No