Pope Francis on Sunday will canonize John Henry Newman, a Victorian-era intellectual, Catholic convert and cardinal. A self-described "controversialist," Newman was an early leader in the Oxford Movement, an attempt to reinstate ancient forms of faith and worship in the Church of England. After converting to Catholicism at age 44, Newman went on to found a Catholic university and a religious community, as well as a school, and he clashed with authoritarian, or "Ultramontane," Catholics over the issue of papal infallibility.