Anvard is the moatless castle described in a book series by an author that died in what year?
C. S. Lewis Clive Staples Lewis (29 November 1898 – 22 November 1963) was a British novelist, poet, academic, medievalist, literary critic, essayist, lay theologian, broadcaster, lecturer, and Christian apologist. He held academic positions at both Oxford University (Magdalen College, 1925–1954) and Cambridge University (Magdalene College, 1954–1963). He is best known for his works of fiction, especially "The Screwtape Letters", "The Chronicles of Narnia", and "The Space Trilogy", and for his non-fiction Christian apologetics, such as "Mere Christianity", "Miracles", and "The Problem of Pain".
Maria Gripe Maria Gripe, born Maja Stina Walter (25 July 1923 – 5 April 2007), was a Swedish author of books for children and young adults, often written in a magical and mystical tone. For her lasting contribution to children's literature she received the Hans Christian Andersen Medal for Writing in 1974.