Vitaliano Borromeo (1720-1793) is the son of Duchess Clelia Grillo and Giovanni Borromeo, Grandee of Spain and General of the Militia. Clelia Grillo is a woman of great culture, passionate about arts, sciences, religion, host of a Milanese salon frequented by enemies of Maria Teresa of Austria and supporters of the return of the Spanish government, visits that will cause the "confinement" of the noblewoman in her estate of Sedriano (Milan).