Rubuta ci gaba ga wannan sakin layi - A lokacin 1691 papal conclave
A cikin shekara ta 1790, Negroni ya rubuta wani sanarwa ga ƙungiyar "zelanti" cardinals, waɗanda ke son zaɓen Paparoma ya kasance ba tare da son kai ba kuma daga tsoma baki na Faransa, Spain da kuma Empire Mai Tsarki. A cikin wannan taron, tare da ƙaddamar da takardu ya dakatar da takarar Paluzzo Paluzzi Altieri degli Albertoni, Cardinal-Nephew ga Paparoma Clement X.