Droit du seigneur
In Mozart's "The Marriage of Figaro", which premiered in 1786 with a libretto by Lorenzo Da Ponte, the comic plot revolves around the successful efforts of the young bride and groom, Figaro and Susanna, to block the efforts of the unfaithful Count Almaviva to seduce Susanna. To achieve his aim, the frustrated Count threatens to reinstitute "droit du seigneur". It was based on a play by Pierre Beaumarchais.
I due Figaro (Mercadante)
I due Figaro, o sia Il soggetto di una commedia is an opera (melodramma buffo) in two acts by Saverio Mercadante to a libretto by Felice Romani based on "Les deux Figaro" by Honoré-Antoine Richaud Martelly. The opera was composed in 1826 but its production was delayed for some years due to censors' intervention.