Lloyd Chudley Alexander (January 30, 1924 – May 17, 2007) was a widely influential American author of more than forty books, primarily fantasy novels for children and young adults. His most famous work is The Chronicles of Prydain, a series of five high fantasy novels whose conclusion, The High King, was awarded the 1969 Newbery Medal for excellence in American children's literature. He won U.S. National Book Awards in 1971 and 1982.