Sean & Arthur's Knights
Sean is the epitome of Arthur's knights. It is difficult assign him aparticular knight, however. He is dead, and there is no legend to be found of any ghostly knights in Arthur's service. He is not Lancelot, for there is no Queen in Mage for him to steal from Kevin (for that, we can look to Mage: The Hero Defined). I prefer to think of him as a knightly representative.