What was the name of J.R.R. Tolkien’s son who edited and published much of his father’s posthumous work?

Christopher Tolkien edited and published much of J.R.R. Tolkien’s posthumous work.

Born in 1924, Christopher was Tolkien’s third child and became the principal literary executor of his father’s Middle-earth papers. After J.R.R. Tolkien died in 1973, Christopher organized, edited, and sometimes reconstructed extensive drafts, notes, maps, and versions of stories.

His most famous editorial achievement was The Silmarillion, published in 1977. He also edited Unfinished Tales, The History of Middle-earth, and other books that reveal how Tolkien developed his mythology over many decades. Christopher’s role was not simply that of a publisher: the surviving papers often contained multiple versions and incomplete passages, so he had to establish texts and explain their relationships. Readers should distinguish The Silmarillion from The Lord of the Rings: the former was assembled and published after Tolkien’s death, while the latter was published during his lifetime.