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).
Tutti in maschera Tutti in maschera (Everyone in Disguise) is an opera (called a "commedia lirica") by Carlo Pedrotti. The libretto is by Marco Marcelliano Marcello, based on the 1759 comedy "L'impresario delle Smirne" by Carlo Goldoni. It was premiered at the Teatro Nuovo, Verona, on 4 November 1856.