Romilda Pantaleoni is associated with her roles of La Gioconda and Margherita in what opera
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. (This is the same source as Gaetano Rossi had used for his libretto for Mercadante's "Il giuramento" in 1837).
La diavolessa La diavolessa ("The She-devil") is an opera (dramma giocoso) in 3 acts by Baldassare Galuppi. The Italian-language libretto was by Carlo Goldoni. It premiered in November 1755 at the Teatro San Samuele, Venice.