Pope Pius IX
Pope Pius IX (born Giovanni Maria Mastai-Ferretti) was head of the Catholic Church and sovereign of the Papal States from 1846 to 1878. He was the longest-reigning elected pope, convened the First Vatican Council (which defined papal infallibility), issued the Syllabus of Errors (1864), and opposed aspects of Italian unification, including the loss of most Papal States.
Books
This list of books are ONLY the books that have been ranked on the lists that are aggregated on this site. This is not a comprehensive list of all books by this author.