Louis-Jules Barbon Mancini-Mazarini, 10th Duc de Nevers
Louis-Jules Barbon Mancini-Mazarini, duc de Nevers (1716-1798), known as Nivernois, was French ambassador to Britain from 1762-1763. At the age of 14 he was married to the 15-year-old Hélène-Françoise-Angélique Phélypeaux de Pontchartrain (1715–1781). Montagu had frequently met him and his wife in London.
Also known as:
- French Ambassador to Britain
- 10th Duc de Nevers
- Duke of Nivernois
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