What was the pen name C.S. Lewis used for his 1933 novel The Pilgrim’s Regress?

Clive Hamilton was the pen name C.S. Lewis used for The Pilgrim’s Regress.

Lewis published The Pilgrim’s Regress in 1933 under the name Clive Hamilton. The allegorical novel follows a character named John as he journeys through a landscape representing philosophical and religious ideas. Its title echoes John Bunyan’s The Pilgrim’s Progress, while its argument reflects Lewis’s own engagement with modern intellectual movements.

Clive Hamilton combined Lewis’s first name, Clive, with a surname chosen in memory of his mother’s family. Lewis had already adopted “Jack” as his everyday name, but his published identity varied according to the work. He later used his initials, C.S. Lewis, for most of his major books.

The pen name is easy to confuse with Lewis’s birth name, Clive Staples Lewis. “Clive Hamilton” was the author name on The Pilgrim’s Regress, not Lewis’s legal name.