Lloyd Chudley Alexander was an American author of more than 40 books, primarily fantasy novels for children and young adults. Over his seven-decade career, Alexander wrote 48 books, and his work has been translated into 20 languages. 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.