Nivernais, Louis-Jules-Barbon Mancini- Mazarini, duc de (1716-1798)

French writer, statesman, and diplomat.

Served in the French army (c. 1734-43). French ambassador to Rome (1749-52) and Prussia (1756). Represented France in the peace negotiations following the Seven Years’ War (1762-63). Minister of state (1787-89). Member of the Académie française (1743) and the Royal Society (1763). Published numerous literary essays and translations.

Son of Philippe-Jules-François and Marie- Anne (Spinola) Mazarini-Mancini. Married Hélène-Angélique-Françoise Phélypeaux de Pontchartrain (1730); four children.