Katherine Kurtz
Katherine Kurtz (Katherine Irene Kurtz) is an American fantasy author. She was born 1944. She is best known for the Deryni novels.
When young Kelson, King of Gwynedd is reported drowned in a search for the legendary Saint Camber, Nigel was deemed to be king. But his son, Conoll, was too jealous and struck down his own father. Conoll had forgotten Saint Camber.