La Fère
On 1 March 1661 he married Hortense Mancini, the favourite niece and heiress of the immensely wealthy Cardinal Mazarin. Upon his marriage, he became duc Mazarin. In addition, he was made a French peer, duc de La Meilleraye, prince de Château-Porcien, marquis de Montcornet, as well as comte de La Fère et de Marle.