The Fisher King

"In Arthurian legend, the Fisher King is the last in a long bloodline charged with keeping the Holy Grail. Versions of the original story vary widely, but he is always wounded in the legs or groin and incapable of standing. All he is able to do is fish in a small boat on the river near his castle, Corbenic, and wait for some noble who might be able to heal him by asking a certain question. In later versions, knights travel from many lands to try to heal the Fisher King, but only the chosen can accomplish the feat. This is achieved by Percival alone in the earlier stories; he is joined by Galahad and Bors in the later ones."