From USA Today:
Lloyd Alexander, a prolific writer of children's books including the five-book series The Chronicles of Prydain, died Thursday. He was 83.
Alexander died at his home in the Philadelphia suburb of Drexel Hill, said Jennifer Abbots, spokeswoman for his publishing company, Henry Holt Books For Young Readers. He had cancer, she said.
The final book in his Prydain series, The High King, won the Newbery Medal from the American Library Association in 1969, being recognized as the best children's book of the year. Another book in the series, The Black Cauldron, was named a runner-up for the medal in 1966, a status now known as a Newbery Honor Book.
Read the whole article here.
update: A very nice article also appears in The Washington Post.