How is the Legend of the Knights of the Round Table important to Francis in the novel, What’s Bred in the Bone?

The legend of the Knights of the Round Table and the Holy Grail becomes an obsession with Francis. The legend says that the Grail (the cup that Jesus drank from at the Last Supper) has survived the centuries and that any who find it and look upon it are endowed with everlasting life. King Arthur's knights searched long for the Grail. Francis' understanding of the Grail does not come from books, however, but from the art of the Pre-Raphaelite Brotherhood. The light emanating from these pictures is like the light Francis imagines of the Grail. Francis searches for his own Grail in life, which is an understanding of who he is as well as a fulfillment of his life as an artist.