What pseudonym did C.S. Lewis use for his 1933 allegorical poem Dymer?

C.S. Lewis used the pseudonym Clive Hamilton for his 1933 poem Dymer.

Dymer is a long narrative poem about a monstrous and morally troubling figure who grows from an encounter between a woman and a mysterious creature. Lewis published it under the name Clive Hamilton rather than his better-known initials, partly separating the poem from his academic identity and earlier literary reputation.

The pseudonym combines his given name, Clive, with Hamilton, his mother’s maiden name. Lewis had already used Clive Hamilton for The Pilgrim’s Regress in 1933, although that book appeared under the same pseudonym in the same year. Later works were increasingly published as C.S. Lewis.

Readers sometimes confuse Clive Hamilton with N.W. Clerk, the name Lewis used for a different kind of work: the 1955 biography of his wife, Joy Davidman. Identifying the pseudonym therefore helps distinguish Lewis’s early allegorical fiction and poetry from his later memoir and scholarship.