In 1743 Mancini-Mazarini was elected to the [[Académie française]] 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 generally considered to be of little value, his Fables being his best productions. His Œuvres complètes were published in Paris in 1796; an edition of his Œuvres posthumes was brought out in Paris by [[Nicolas-Louis François de Neufchâteau]] in 1807, and his Correspondance secrète was published in Paris by de Lescure in 1866.
== Family ==
His wife was Hélène Françoise Angélique Phélypeaux de Pontchartrain (1715–1781), daughter of [[...|Jérôme Phélypeaux, comte de Pontchartrain]], and they had five children:
* X Mancini-Mazarini (1737)
* Hélène Julie Rosalie Mancini-Mazarini (1740–1780), married in 1753 to Louis-Marie Foucquet de Belle-Isle, comte de Gisors (1732–1758), son of the [[...|duc de Belle-Isle]], himself son of [[Nicolas Fouquet]] who purchased ; married again to [[Louis-Camille de Lorraine, comte de Marsan]], brother of the [[Louise de Lorraine|Duchess of Bouillon]] without issue;
* Adélaïde Diane Hortense Délie Mancini-Mazarini (1742–1808), married [[...|Louis Hercule de Cossé, Duke of Brissac]];
* Jules Frédéric Mancini, Count of Nevers (1745–1753), died in infancy;
* Louis Mancini (1748–1748), died in infancy;