* King Arthur the legendary figure? His story dates back to the 5th or 6th century, but his existence is debated.
* A specific movie, book, play, or other work of art about King Arthur? For example, "Excalibur" (1981) is a movie about Arthur, while "Le Morte d'Arthur" (1485) is a book. To answer this, you'd need to specify which work you're interested in.
* Something else related to Arthur? Please clarify your question.
Once you provide more information, I can give you a more accurate answer.