What pseudonym did C.S. Lewis use for his 1933 book The Pilgrim’s Regress?

C.S. Lewis used the pseudonym Clive Hamilton for his 1933 book The Pilgrim’s Regress.

The name combined Lewis’s first given name, Clive, with a surname he had previously used in poetry. The book was Lewis’s first published work of prose fiction and presents an allegorical journey through ideas about philosophy, religion, culture, and desire.

The title echoes John Bunyan’s The Pilgrim’s Progress, but Lewis’s book is not a retelling. Its central traveler, John, encounters figures and landscapes representing competing intellectual and spiritual positions. Lewis later considered the work difficult and less accessible than some of his other writings.

Lewis also published poetry under the name Clive Hamilton, including Spirits in Bondage in 1919 and Dymer in 1926. He used his own name for later books such as The Problem of Pain and The Chronicles of Narnia, so Clive Hamilton is especially associated with his early literary career.