What name did C.S. Lewis use for his 1933 book of poetry?

C.S. Lewis used the name Clive Hamilton for his 1933 book of poetry, Spirits in Bondage. The volume was published under a pseudonym rather than under the initials by which he later became famous.

Spirits in Bondage was Lewis's first published book. Its poems reflect the effects of the First World War, religious uncertainty, and literary influences that shaped his early writing. Lewis had served as a British Army officer during the war and was wounded in 1918, experiences that informed some of his early verse.

The pseudonym combined Lewis's first name with his mother's maiden name, Hamilton. He later used another pen name, N.W. Clerk, for The Pilgrim's Regress in 1933. These names can cause confusion because they belong to different books and stages of his career.

Lewis eventually became better known for prose than poetry. His major later works included The Allegory of Love, The Screwtape Letters, and The Four Loves. Even so, Spirits in Bondage is important for tracing the literary and spiritual development that preceded his mature Christian apologetics and fiction.