Sir Gawain & the Green Knight

Sir Gawain and the Green Knight is a late 14th-century Middle English alliterative romance. It is one of the better-known Arthurian stories, of an established type known as the beheading game.
It is an important poem in the romance genre, which typically involves a hero who goes on a quest that tests his prowess, and it remains popular to this day in modern English renderings from J. R. R. Tolkien, Simon Armitage and others, as well as through film and stage adaptations.