C. S. Lewis
Lewis and fellow novelist J. R. R. Tolkien were close friends. They both served on the English faculty at Oxford University, and were active in the informal Oxford literary group known as the Inklings. According to Lewis's memoir "Surprised by Joy", he was baptised in the Church of Ireland, but fell away from his faith during adolescence. Lewis returned to Anglicanism at the age of 32, owing to the influence of Tolkien and other friends, and he became an "ordinary layman of the Church of England". Lewis's faith profoundly affected his work, and his wartime radio broadcasts on the subject of Christianity brought him wide acclaim.
Raymond Wilson Chambers
Chambers was a friend of J.R.R. Tolkien and their careers parallel each other at many points: both were Catholics (Tolkien a Roman and Chambers an Anglo-Catholic), scholars of Old English literature, both experienced the horrors of trench warfare in World War I (Chambers was too old to be an enlisted man, however), and both wrote influentially on "Beowulf" (Chambers' writings were one of the inspirations for Tolkien's ""). Thomas Shippey described Chambers as "a patron and supporter of Tolkien in his early years."