Editing Un ballo in maschera (section)

===1859: ''Una vendetta'' becomes ''Un ballo in maschera''===
When the legal issues were resolved within a few months, Verdi was free to present the libretto and musical outline of ''Gustave III'' (which was basically ''Una vendetta'' with characters' names and locations changed){{sfn|Gossett|2006|p=499}} to the [[Teatro dell'Opera di Roma|Rome Opera]].  There, the censors demanded further changes. Removing the action from Europe, the location became Boston during the British colonial period and the leading character became Riccardo, the Count (or Earl) of Warwick. At this point, the opera became ''Un ballo in maschera'' set in North America.