Armand Jean de Vignerot du Plessis

Armand Jean de Vignerot du Plessis, 2nd Duke of Richelieu (Paris, 3 October 1629 - Paris, 20 May 1715), was a French naval officer and nobleman.

The great-nephew of Cardinal Richelieu (to whose dukedom he succeeded), he became a general of the gallies in 1642. He was sent to Naples, which had risen up against the Spanish and proclaimed the Neapolitan Republic. He joined up with Don John of Austria's fleet off Capri but was unable to land the troops he was transporting.

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