The Green Knight: A Vision is a novel written by Richard Garnett and illustrated by Margaret Porter, first published in 1911. The book tells the story of a young man named John who, after falling asleep in a church, has a vivid dream in which he meets the Green Knight, a mysterious figure from Arthurian legend. The Green Knight challenges John to a game, in which he must strike him with an axe, but on the condition that the Green Knight will be allowed...