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.
L'amor coniugale
Like Beethoven's "Fidelio", the libretto of "L'amor coniugale" is based on Jean-Nicolas Bouilly's French libretto for Pierre Gaveaux's 1798 opera "Léonore ou L'amour conjugal". Unlike "Fidelio" which focuses on the struggle for political liberty, Mayr's opera, also known as "Il custode di buon cuore" (The Good-hearted Jailer) and described in its libretto as a "farsa sentimentale", focuses more on the interpersonal relationships between the protagonists and contains comic elements. Rossi condensed Bouilly's two-act libretto into one act containing 19 scenes and changed the setting from the Napoleonic wars to 17th century Poland.