Elwin Ransom
Elwin Ransom may be based on C. S. Lewis' friend J. R. R. Tolkien ("Elwin" means "Elf friend" in Anglo-Saxon), though he seems to have autobiographical elements. In "That Hideous Strength" Ransom, with his royal charisma and matter-of-fact breezy acceptance of the supernatural, appears less like Tolkien than like Charles Williams (or some of the heroes in Williams' books).
J. R. R. Tolkien
There are seven blue plaques in England that commemorate places associated with Tolkien: one in Oxford, one in Bournemouth, four in Birmingham and one in Leeds. One of the Birmingham plaques commemorates the inspiration provided by Sarehole Mill, near which he lived between the ages of four and eight, while two mark childhood homes up to the time he left to attend Oxford University and the other marks a hotel he stayed at before leaving for France during World War I. The plaque in West Park, Leeds, commemorates the five years Tolkien enjoyed at Leeds as Reader and then Professor of English Language at the University. The Oxford plaque commemorates the residence where Tolkien wrote "The Hobbit" and most of "The Lord of the Rings".