Who was King Arthur's most famous group c followers? The Legend of King Arthur King Arthur was a legendary British king, known for his bravery and wisdom. He was the leader of the Knights of the Round Table, a group of noble knights who sought justice and peace in the kingdom. The most famous story about King Arthur is the quest for the Holy Grail, a sacred object said to have miraculous powers. Arthur's sword, Excalibur, was also magical, and it was said to have been given to him by the Lady of the Lake . Arthur's reign was full of triumphs, but ultimately , his kingdom fell apart due to betrayal and the tragic death of his closest knight , Lancelot. The Warriors of the West The Brave Knights The Guardians of the Kingdom The Knights of the Round Table The Royal Army