Which son of J.R.R. Tolkien edited and published many of his father’s posthumous writings?

Christopher Tolkien edited and published many of his father J.R.R. Tolkien’s posthumous writings.

Born in 1924, Christopher became the principal literary executor of Tolkien’s estate. After his father died in 1973, he organized, edited, and sometimes reconstructed manuscripts left in different states of completion. His editorial work brought books such as The Silmarillion, Unfinished Tales, and The History of Middle-earth to publication.

Christopher was not the only Tolkien child, but he had an unusually close connection to the development of Middle-earth. He helped prepare maps for The Lord of the Rings and served as an adviser on Tolkien’s imagined history and languages. Readers should distinguish his editorial role from authorship: these posthumous books were based on Tolkien’s writings, with Christopher providing selection and arrangement.