05-01-202605-01-2026<p>This article deals with the office of the Roman Pontiff in the letters from Catherine of Siena to Gregory XI. From her own experience and in a feminine language she reflected on the Petrine primacy bringing together theoretical and practical aspects. In her letters, she highlighted that the papal authority was to serve as a shepherd and cellar keeper of the Blood of Christ. His poor performance was an issue that affected the members of the Church. Likewise, she explained to Gregory XI, that the unity of the Church, as the fundamental mission of the Pope, demanded his return to his legitimate see in Rome.</p>info:eu-repo/semantics/openAccessCatherine of SienaDoctors of the ChurchRoman Pontiffpower of governmentCatherine of SienaRoman Pontiff,Doctors of the Church,ower of governmentArticle