Armand Jean de Vignerot du Plessis, 2ème duc de Richelieu (Paris, 1629 - Paris, 1715) was a French sailor and nobleman.

Life

The great-nephew of Cardinal de Richelieu (to whose dukedom he succeeded), he became a general of the gallies in 1642. He was sent to Naples

Naples

Naples is a city in Southern Italy, situated on the country's west coast by the Gulf of Naples. Lying between two notable volcanic regions, Mount Vesuvius and the Phlegraean Fields, it is the capital of the region of Campania and of the province of Naples...

, which had risen up against the Spanish and proclaimed the Neapolitan Republic

Neapolitan Republic (1647)

The Neapolitan Republic was a Republic created in Naples, which lasted from 22 October 1647 to 5 April 1648. It began after the revolt led by Masaniello and Giulio Genoino against the Spanish viceroys....

. He joined up with Don John of Austria's fleet off Capri

Capri

Capri is an Italian island in the Tyrrhenian Sea off the Sorrentine Peninsula, on the south side of the Gulf of Naples, in the Campania region of Southern Italy...

 but was unable to land the troops he was transporting.