C. S. Lewis
After his conversion to theism in 1929, Lewis converted to Christianity in 1931, following a long discussion and late-night walk with his close friends Tolkien and Hugo Dyson. He records making a specific commitment to Christian belief while on his way to the zoo with his brother. He became a member of the Church of England – somewhat to the disappointment of Tolkien, who had hoped that he would join the Catholic Church.
Paul H. Kocher
"J. R. R. Tolkien and George MacDonald." "Mythlore: A Journal of J. R. R. Tolkien, C. S. Lewis, Charles Williams, and the Genres of Myth and Fantasy Studies" 8.3 (Autumn 1981): 3-4.