An Unfinished Teenage Novel, “The Quest of Bleheris”, by the young C.S. Lewis (Narnia books)…

“In 2021, Inklings scholar Don W. King was able to provide a full transcription of “The Quest of Bleheris” in Sehnsucht journal. Recently, Sehnsucht has become an open-access journal.”

It’s an Arthurian romance in the William Morris mode.