1911 Encyclopædia Britannica/Nivernais, Louis Charles Barbon Mancini Mazarini, Duc de

NIVERNAIS, LOUIS CHARLES BARBON MANCINI MAZARINI, Duc de (1716–1798), French diplomatist and writer, was born in Paris on the 16th of December 1716, son of Philippe Jules François, duc de Nevers, and Maria Anne Spinola, and great-nephew of Cardinal Mazarin. He was educated at the College Louis le Grand, and married at the age of fourteen. He served in the campaigns in Italy (1733) and Bohemia (1740), but had to give up soldiering on account of his weak health. He was subsequently ambassador at Rome (1748–1752), Berlin (1755–1756) and London, where he negotiated the treaty of Paris (10th of February 1763). From 1787 to 1789 he was a member of the Council of State. He did not emigrate during the Revolution, but lost all his money and was imprisoned in 1793. He recovered his liberty after the fall of Robespierre, and died in Paris on the 25th of February 1798. In 1743 he was elected to the Academy for a poem entitled Délie, and from 1763 he devoted the greater part of his time to the administration of the duchy of Nevers and to belles-lettres. He wrote much and with great facility; but his writings are of little value, his Fables being his best