The protagonist of C.S. Lewis’s Space Trilogy is named Elwin Ransom. He is a philologist and university professor who becomes involved in interplanetary events across the three novels.
Ransom is introduced in Out of the Silent Planet, published in 1938. In that story he is abducted and taken to Malacandra, Lewis’s name for Mars. He returns in Perelandra, published in 1943, and That Hideous Strength, published in 1945. Each novel develops a different aspect of Lewis’s imaginative treatment of language, science, morality, and spiritual conflict.
Readers occasionally misremember the name as “Edwin,” because that is a familiar English first name and resembles Elwin in spelling. The character’s correct name is Elwin Ransom. The trilogy is also sometimes called the Ransom Trilogy, using his surname rather than the broader marketing label Space Trilogy.