Governor of Perugia.
Papal nuncio to Poland and Vienna.
Bishop of Faenza.
Archbishop of Naples.
Founded several charitable and educational institutions.
Secured the repeal of the Declaration of the French Clergy.
Inadvertently furnished the cause for the war of the Spanish Succession when, annoyed by the arrogance of the imperial ambassador, Count Martinitz, he advised Charles II of Spain to name the Duke of Anjou, a Frenchman, his testamentary successor.