Sir Lancelot was the finest knight in the court of King Arthur, a bravest and most skillful fighter. He often fought in disguise, but he was always recognized because no other knight had as much courage and skill as he. Lancelot was brought up by the Lady of the Lake, a woman with magic powers, who took him as an infant to her castle at the bottom of a lake. After he reached manhood, the Lady of the Lake brought him to Arthur’s court, where he proved is courage and was made one of te Knight of the Round Table. Lancelot and Guenevere, the queen, fell in love at Arthur’s court. Lancelot was also loved by Elanine, a beautiful girl, but he soon deserted her and she died of a broken heart. After Arthur discovered the love affair between Lancelot and his wife, the lovers fled to Lancelot’s castle. Lancelot killed several of his fellow knights after they found him with the queen. Later, Lancelot returned Guenevere to Arthur and left Britain. Arthur pursued Lancelot to France but went back to Britain after learning that Modred had seized his kingdom. Lancelot returned to Britain after Arthur’s death and learned that Guenevere had become a nun. He became a religious hermit and died shortly after Guenevere did. Lancelot and Elaine had an illegitimate son, Galahad, who became a famous knight of the Round Table.

Along with many other knights, Lancelot searched for the Holy Grail, the cup that Jesus Christ used at the Last Supper. Because he had moral defects, he did not find the Holy Grail. But his son, Sir Galahad, did.

朗斯洛爵士是亞瑟王朝廷中最驍勇善戰的圓桌騎士。他常常化裝出戰，但總能讓人識破，因為他的膽量和武藝無人能比。朗斯洛是仙女湖夫人養大的。他出生時，湖夫人將他偷去，帶到湖底的宮殿里。朗斯洛成人后，湖夫人把他送到亞瑟的宮廷，由于他的勇敢而被封為圓桌騎士。在亞瑟的宮廷里，朗斯洛開始與王后圭內維爾相愛。一個叫做伊蓮的美麗姑娘也愛上了朗斯洛，但朗斯洛很快拋棄了她。伊蓮由于失戀，郁郁而終。亞瑟王發現朗斯洛與妻子私通后，這對情人倉皇逃到朗斯洛的城堡。朗斯洛還殺死了幾個反對他誘拐王后的騎士。后來朗斯洛被迫交還圭內維爾，離開不列顛。亞瑟一直追到法國，但聽到莫德雷德反叛的消息，匆忙返回。亞瑟死后，朗斯洛去找圭內維爾，得知她已經進了修道院。朗斯洛心灰意冷，做了隱士。不久，圭內維爾與他先后死去。朗斯洛與伊蓮有一私生子名叫加拉哈德，后來成了最著名的圓桌騎士之一。

朗斯洛也曾參與尋找圣杯的歷險，但由于本身的道德缺陷，未能成功。但這一偉業由他的兒子加拉哈德完成了。