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.
Warwick
J. R. R. Tolkien seems to have been very influenced by Warwick (where he was married in the Catholic Church of Saint Mary Immaculate) and by its Mercian connections: Lynn Forest-Hill, in an article in the "Times Literary Supplement" (TLS 8 July 2005 pp 12–13) argues cogently that two important settlements in Tolkien's work were modelled on Warwick — Edoras closely on the early town, and Minas Tirith more remotely on the Norman; and that aspects of the plot of "The Lord of the Rings" are paralleled in the romance known as Guy of Warwick. Christopher Tolkien, in "The Book of Lost Tales", stated that Kortirion, the main city of Tol Eressëa, "would become in after days Warwick."