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'''Pope Pius IX''' (May 13, 1792-February 7, 1878) - born '''Giovanni Maria Mastai-Ferretti''' -  was the [[Pope]] and leader of the [[Catholic church]] from June 16, 1846 to February 7, 1878 the longest reign in Church history. He convened the [[First Vatican Council]], which declared the Pope was infallible under certain conditions.  He encouraged the rapid growth of religiosity among lay people, which strengthened the Church; he especially promoted the cult of the Sacred Heart of Jesus as symbol of love.

'''Pope Pius IX''' (May 13, 1792-February 7, 1878) - born '''Giovanni Maria Mastai-Ferretti''' -  was the [[Pope]] and leader of the [[Catholic church]] from June 16, 1846 to February 7, 1878 the longest reign in Church history. He convened the [[First Vatican Council]], which declared the Pope was infallible under certain conditions.  He encouraged the rapid growth of religiosity among lay people, which strengthened the Church; he especially promoted devotion to the Sacred Heart of Jesus as symbol of love.