Claim: In I due Foscari (an opera in three acts by Giuseppe Verdi to an Italian libretto by Francesco Maria Piave, based on the 1821 historical play, The Two Foscari by Lord Byron), the role of Francesco Foscari, Doge of Venice was played by Achille De Bassini in a baritone voice, the role of his son, Jacopo Foscari was played by Giacomo Roppa in a tenor voice, and the role of Lucrenzia Contarini was played by Marianna Barbieri-Nini in a soprano voice.
Evidence: I due Foscari (The Two Foscari) is an opera in three acts by Giuseppe Verdi to an Italian libretto by Francesco Maria Piave, based on the 1821 historical play, The Two Foscari by Lord Byron. Francesco Foscari, Doge of Venice Achille De Bassini baritone Jacopo Foscari, his son Giacomo Roppa tenor Lucrezia Contarini, Jacopo Foscari's wife Marianna Barbieri-Nini soprano