Sir Lancelot was the most famous knight of King Arthur's round table. He was raised by the Lady of the Lake after being given to her as a baby. Lancelot was known as a brave hero but could also be arrogant. King Arthur's downfall was partly due to Lancelot's affair with Arthur's wife Guinevere, whom Arthur had married. The round table was round so that all knights would be equal and no one would sit at the head.