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).
Charles Leslie Wrenn
Charles Leslie Wrenn (1895–1969) was a British scholar. He became Rawlinson and Bosworth Professor of Anglo-Saxon at the University of Oxford in 1945, the successor in the chair of J.R.R. Tolkien, and held the position until 1963. Wrenn was a Fellow of Pembroke College, Oxford. He was also a member of the Oxford literary discussion group known as the "Inklings", which included C. S. Lewis and Tolkien. Some of the work published by Wrenn includes "The English Language" (1949), "A Study of Old English Literature" (1967)"," and "An Old English Grammar," written with Randolph Quirk (1955, rev. 1957). His literary interests were primarily comparative literature and later poets including T. S. Elliot.