What was the name of C.S. Lewis’s older brother, a writer and army officer?

C.S. Lewis’s older brother was Warren Hamilton Lewis. Known to his family as Warnie, he became a soldier, writer, and important companion in Lewis’s life.

Warren was born in 1895, three years before his younger brother. He served as an officer in the British Army and later retired from military service. The brothers shared a home for many years, first at Oxford and later at The Kilns, the house outside Oxford where Lewis lived.

Warren also kept extensive diaries, which became valuable sources for biographies of C.S. Lewis. He edited and published historical works, including studies connected with France and French history. Because Lewis’s public name uses initials and Warren is often called Warnie, readers can mistake the nickname for a different person. Warnie and Warren Hamilton Lewis refer to the same brother.