The Book of Sir Percival

HERE beginneth the story of Sir Percival of Gales, who was considered to be one of the three great knights of the Round Table at that time. For, if Sir Launcelot was the chiefest of all the knights who ever came unto King Arthur's court, then it is hard to say whether Sir Tristram of Lyonesse or Sir Percival of Gales was second unto him in renown.