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.
Christopher Tolkien
Tolkien had long been part of the critical audience for his father's fiction, first as a child listening to tales of Bilbo Baggins (which were published as "The Hobbit"), and then as a teenager and young adult offering much feedback on "The Lord of the Rings" during its 15-year gestation. He had the task of interpreting his father's sometimes self-contradictory maps of Middle-earth in order to produce the versions used in the books, and he re-drew the main map in the late 1970s to clarify the lettering and correct some errors and omissions. J. R. R. Tolkien invited Christopher to join the Inklings when he was twenty-one years old, making him the youngest member of the informal literary discussion society that included C. S. Lewis, Owen Barfield, Charles Williams, Warren Lewis, Lord David Cecil, and Nevill Coghill.