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).
Tolkien family
Michael Hilary Reuel Tolkien (22 October 1920 – 27 February 1984) was a British teacher. He was J. R. R. Tolkien's second son and was named after J. R. R. Tolkien's brother Hilary. When young Michael lost his toy dog and became sad about this, his father began to write the story of "Roverandom" to comfort him. Michael's fear of spiders was J. R. R. Tolkien's inspiration for the encounter of Bilbo Baggins and the spiders of Mirkwood in "The Hobbit". Michael also used to own a Dutch doll which became an inspiration for Tom Bombadil. In 1939, Michael volunteered for the British Army but he was told to continue his university studies. He studied history at Trinity College, Oxford. In 1941, Michael Hilary Tolkien served in an anti-aircraft role during the Battle of Britain for which he was awarded the George Medal. He met a nurse named Joan Audrey Griffith (1916–1982) whom he married the same year. Later in World War II, he served as an anti-aircraft gunner in France and Germany. In 1944, he returned to Trinity College and finished his studies. He graduated in Modern History in 1945.