Romilda Pantaleoni is associated with her roles of La Gioconda and Margherita in what opera
Romilda Pantaleoni:  She became particularly associated with the roles of Margherita in Boito's "Mefistofele" and the title role in Ponchielli's "La Gioconda"; two roles which she performed in opera houses throughout Italy. La Gioconda (opera): La Gioconda is an opera in four acts by Amilcare Ponchielli set to an Italian libretto by Arrigo Boito (as Tobia Gorrio), based on "Angelo, Tyrant of Padua", a play in prose by Victor Hugo, dating from 1835.
Mefistofele