Pius IX
Pius IX. 1792-1878. Pope 1846-. Longest reign. Defined Immaculate Conception 1854 Papal Infallibility. Syllabus Errorum 1864 criticized Liberalism.
Pius IX. 1792-1878. Pope 1846-. Longest reign. Defined Immaculate Conception 1854 Papal Infallibility. Syllabus Errorum 1864 criticized Liberalism.