View source for Louis Jules Mancini, Duke of Nevers

{{short description|French diplomat and writer}}
{{Use dmy dates|date=October 2019}}
{{Infobox nobility
|name=Louis Jules Mancini
|title=4th [[Duke of Nevers]]
| image = Louis-Jules-Barbon Mancini-Mazarin, duc de Nivernais - Versailles MV 2983.jpg
| caption = 
|full name= Louis Jules Barbon Mancini
|spouse= Hélène Phélypeaux<br>Marie Thérèse de Brancas
|issue=Hélène, Countess of Gisors<br>[[Adélaïde Diane Mancini|Adélaïde Diane, Duchess of Brissac]]
|father=[[Philippe Jules François Mancini|Philippe Jules François Mancini, 4th 3rd Duke of Nevers]]
|mother=  Marianna [[Spinola family|Spinola]]
|birth_date=16 December 1716
|birth_place= [[Paris]], [[France]]
| noble family = [[Mancini]]
|death_place= Paris, France
|death_date = 25 February 1798 (aged 81)
| module = [[File:Crown of a Duke of France.svg|100px|center]]<br />[[File:Blason it-fr Mancini-Mazarini.svg|100px|center]]
}}

'''Louis Jules Mancini''', 4th (and last) '''[[Duke of Nevers]]''' (''Louis Jules Barbon''; 16 December 1716 – 25 February 1798) was a French diplomat and writer.

The Duke was the sixth member elected to occupy seat No. 4 of the [[Académie française]] in 1742. In England, he was styled ''Duke of Nivernois''.<ref>{{cite web | title=Louis-Jules Mancini-Mazarini, Duc de Nivernais (1716–1798) | url=http://www.academie-francaise.fr/immortels/base/academiciens/fiche.asp?param=200 | publisher=Académie française | language=French | year=2009 | accessdate=18 January 2009 | url-status=dead | archiveurl=https://web.archive.org/web/20090211135109/http://www.academie-francaise.fr/Immortels/base/academiciens/fiche.asp?param=200 | archivedate=11 February 2009 | df=dmy-all }}</ref>  

==Early life==
Mancini was born in Paris, son of [[Philippe Jules François Mancini]] (the 3rd duke of Nevers from 1707 until his death in 1768), and his wife, Anna Maria [[House of Spinola|Spinola]], whom he married in 1709. His father, Philippe, was a great-nephew of [[Cardinal Mazarin]] and a great-grandson of the famous beauty [[Gabrièlle de Rochechouart de Mortemart]], sister of [[Madame de Montespan]].

Mancini was educated at [[Lycée Louis le Grand]]. 

==Career==
The Duke joined the French Army serving in the Italian campaigns (1733) and in [[Bohemia]] (1740); but, he had to give up soldiering on account of weak health. In 1738, he sold property including the [[Château de Druyes]] to Louis Damas, Marquis of Anlezy.

He was subsequently French Ambassador to Rome from 1748 to 1752, to Berlin from 1755 to 1756, and [[List of Ambassadors of France to the United Kingdom|London]], where he negotiated the [[treaty of Paris (1763)|Treaty of Paris]], signed on 10 February 1763. From 1787 to 1789 he was a member of the [[Conseiller d'Etat (France)|Council of State]]. He chose not to [[French Emigration (1789–1815)|emigrate]] during the [[French Revolution|Revolution]], which led to the loss of all his money and he was imprisoned in 1793. He regained his liberty after the fall of [[Maximilien Robespierre]], and died in Paris on 25 February 1798.

In 1743, the Duke 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 his Burgundian estates in [[Nevers]] as well as to ''Belles-lettres''. He wrote a great deal and with great facility; but his writings nowadays are generally considered to be of little value, his ''Fables'' being his best work. 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.

==Personal life==
At the age of fourteen, he was married to Hélène [[House of Phélypeaux|Phélypeaux de Pontchartrain]] (1715–1781), daughter of [[Jérôme Phélypeaux de Pontchartrain|Jérôme Phélypeaux, Count of Pontchartrain]]. Together, they were the parents of:

# unnamed Mancini (1737–1737), who died at birth.
# Princess Hélène Mancini (1740–1780), who married [[Louis Marie Foucquet de Belle-Isle]], Count of Gisors (1732–1758), son of the [[Charles Louis Auguste Fouquet, duc de Belle-Isle|Duke of Belle-Isle]], himself son of [[Nicolas Fouquet]] who purchased [[Belle Île|Belle-Isle]]; married again to [[Camille, Prince of Marsan]], brother of the [[Louise Henriette Gabrielle of Lorraine|Duchess of Bouillon]] without issue;
# [[Adélaïde Diane Mancini|Princess Adélaïde Diane Mancini]] (1742–1808), who married [[Louis Hercule Timoléon de Cossé-Brissac|Louis Hercule Timoléon de Cossé, Duke of Brissac]]. 
# Prince Jules Frédéric Mancini, styled ''Count of Nevers'' (1745–1753), who died in infancy. 
# Prince Louis Mancini (1748–1748), who died in infancy.

Styled ''Prince de Vergagne'' whilst [[heir apparent|heir]] to his father's titles, he was also a [[Prince of the Holy Roman Empire]] and a Knight of [[Order of the Golden Fleece|the Golden Fleece]] and of [[Order of the Holy Spirit|the Holy Spirit]]. The [[duke]]dom became extinct upon his death.

==See also ==
* [[Mancini family]]
* [[List of Ambassadors of France to the United Kingdom]]

==References==
{{reflist}}

==External links==
{{commons category|Louis Jules Mancini, Duke of Nevers}}
* [http://www.burkespeerage.com/ www.burkespeerage.com]
* {{EB1911|wstitle=Nivernais, Louis Charles Barbon Mancini Mazarini, Duc de|volume=19|page=718}}

{{Académie française Seat 4}}
{{Authority control}}

{{DEFAULTSORT:Mancini-Mazarini, Louis-Jules}}
[[Category:1716 births]]
[[Category:1798 deaths]]
[[Category:Writers from Paris]]
[[Category:Dukes of Nivernais]]
[[Category:18th-century French poets]]
[[Category:18th-century French male writers]]
[[Category:18th-century French diplomats]]
[[Category:Ambassadors of France to the Holy See]]
[[Category:Ambassadors of France to Prussia]]
[[Category:Ambassadors of France to Great Britain]]
[[Category:Members of the Académie Française]]
[[Category:Dukes of Nevers|Mancini Mazarini]]
[[Category:Princes of the Holy Roman Empire]]
[[Category:Grandees of Spain]]
[[Category:Peers of France]]
[[Category:French fabulists]]
[[Category:Members of the Conseil d'État (France)]]
[[Category:State ministers of France]]
[[Category:Lycée Louis-le-Grand alumni]]
[[Category:Mancini family]]