The story of King Arthur and the Knights of the Round Table is very, very old. People know that there was a king in Britain between the years 400 and 600. He fought the Saxons, from countries in the north of Europe, and perhaps this king was Arthur. He lived, perhaps, in Wales or in the west of England -- in Somerset or Cornwall.
People wrote stories about this king hundreds of years later, but they made the stories more interesting and more exciting. At that time people were interested in magic, knights and their ladies. So people fight with swords and use magic in these stories.
Who wrote these first stories? Nobody really knows, but different people in France and Britain wrote about King Arthur and his knights. Not every book about them has the same people and stories in it. One book (1484), by Sir Thomas Malory, is very famous. He used French stories about King Arthur and wrote them in English.
Graded reader at Level 2 (600 headwords - Pre-Intermediate), for a total of 10,369 words.