Christopher John Reuel Tolkien was an English academic editor and writer. The son of the author and academic J. R. R. Tolkien, he edited 24 volumes based on his father's posthumously published work, including The Silmarillion and the 12-volume series The History of Middle-Earth, a task that took 45 years. He drew the original maps for his father's fantasy novel The Lord of the Rings. He spent the second half of his life in France, becoming a French citizen.