Under what pseudonym did C.S. Lewis publish poetry in the 1920s?

C.S. Lewis published poetry in the 1920s under the pseudonym Clive Hamilton.

Lewis used Clive Hamilton for two poetry books: Spirits in Bondage, published in 1919, and Dymer, published in 1926. The name combined his first name, Clive, with his mother’s maiden name, Hamilton. These early poems appeared before he became widely known as a Christian apologist and children’s author.

Spirits in Bondage reflects the impact of World War I and Lewis’s experience as a soldier. Dymer is a long narrative poem about a fantastical figure and was issued while Lewis was still developing his literary identity.

Lewis later used another pseudonym, N.W. Clerk, for A Grief Observed. Clive Hamilton and N.W. Clerk therefore refer to different stages and purposes in his writing career, not to interchangeable names.