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.

The Chronicles of Prydain is a pentalogy of children's high fantasy Bildungsroman novels written by American author Lloyd Alexander and published by Henry Holt and Company. The series includes: The Book of Three (1964), The Black Cauldron (1965), The Castle of Llyr (1966), Taran Wanderer (1967), and The High King (1968). The Black Cauldron earned a 1966 Newbery Honor, and The High King won the 1969 Newbery Medal.