Pierre Beaumarchais
In 1786, Wolfgang Amadeus Mozart composed an opera, "Le Nozze di Figaro", based on "The Marriage of Figaro", with a libretto by Lorenzo Da Ponte based on the play. Several composers including Paisiello in 1782 wrote operas based on "The Barber of Seville". Rossini's 1816 version is his most successful work and still often performed. In 1966, Darius Milhaud composed an opera, "La mère coupable", based on "The Guilty Mother".
Ortensio Mauro
(Bartolomeo) Ortensio Mauro (1632/33 – 1725) was an Italian writer and librettist.
He was born in 1632 or 1633 in Padua, where he studied literature at the university. He entered the service of the family of the Elector of Hanover in Germany as Italian secretary and eventually became attached to the court of Sophia, Electress of Hanover. Mauro wrote poetry, occasionally served the royal family as a diplomat and wrote the libretti for eight operas by fellow Italian, composer Agostino Steffani including "Henrico Leone", an opera written to inaugurate the new court theatre in Hanover in 1689.
His opera "La superbia d'Alessandro" was the basis for the libretto of George Frederic Handel's opera "Alessandro".