Lady of the Lake
The Lady of the Lake is the regional goddess of Bretonnia, revered throughout its lands but barely known beyond. She stands for purity, nobility, and courage in the face of danger. She is the ideal lady, everything a knight should love and strive to serve.
In the minds of many knights, the Lady is Bretonnia, in a mystical sense. Unlike virtually all other Gods of the Old World, the Lady is encountered by her mortal worshipers in this world. All Grail Knights met her at the climax of their quest, and the Grail Damsels are also said to be initiated by the Lady herself, though they speak very little of it. As a result, when the Lady is portrayed, she is portrayed consistently: a young woman of great and somewhat unworldly beauty, clothed in white, with a narrow golden fillet holding a white veil on her head. In one hand, she holds the Grail.
The most prominent difference between the Cult of the Lady and the other religious orders of the Old World is that the Lady has no Priests or Initiates. Instead, she is served by the Grail Knights—the flower of Bretonnian chivalry—and the Grail Damsels, women taken from their families as children and raised by the Fay Enchantress to serve the Lady with mysterious powers.
The Lady is concerned with protecting Bretonnia, working through its knights to do so. Their courage and martial skill protect the land from external foes, whilst their nobility and chivalry ensure that the land enjoys internal peace and justice. She seems not to concern herself directly with peasants in any way.