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).
Cecil Harwood
Cecil Harwood was the youngest of five children born into the household of a pastor. He attended school together with Owen Barfield, who became his life-long friend and co-worker in many areas of his life. Together they studied at Oxford University and were part of the circle of the Inklings that included C.S. Lewis and J.R.R Tolkien. His friendship with Daphne Olivier, who later became his wife, led him to meet Rudolf Steiner and subsequently, to found the first Waldorf school in England, the so-called “New School” that later became Michael Hall, together with her and three other colleagues. He remained connected to the school for the rest his life.