Valentine de Milan (Valentina of Milan) is an opera by the French composer Étienne Méhul with a libretto by Jean-Nicolas Bouilly. It takes the form of a drame lyrique in three acts. Méhul began work on the score in 1807, revising it in 1815, but it was left incomplete when he died in 1817. His nephew Joseph Daussoigne-Méhul finished the opera, adding five numbers, and it premiered at the Opéra-Comique, Paris on 28 November 1822, five years after Méhul’s death. The opera was a success and there were frequent performances until 1825, when it disappeared from the Opéra-Comique’s repertory.
The setting is Milan of late 14th century. The subject is the love of Valentina Visconti, daughter of Duke Gian Galeazzo of Milan, and Louis of Orléans, younger brother of King Charles VI of France. Valentina wants to marry Louis, but her father is at war with the French and so he has nothing but hatred for him. However, the French beat the Milanese and Valentina persuades Gian Galeazzo to accept the peace Louis offers, in spite of the fierce opposition of the Dukes of Florence and Ferrara, both in love with Valentina themselves. In the second act, the two sides are about to sign the peace treaty when Louis is shot by an unknown hand. Clisson, Constable of France, blames Gian Galeazzo for the assassination attempt and war almost breaks out again. Valentina disguises herself as a shepherdess and fetches the old pharmacist Laurencia, who saves Louis’ life. Gian Galeazzo appears in Louis’ tent and offers to hand over his sword in response to his accusers. However, the real assassin is arrested and found to be an agent of the Duke of Burgundy. Valentina’s identity is revealed, she declares her love for Louis, and the couple gets married.