The Chronicles of Narnia (although we do not learn their surname until "The Voyage of the Dawn Treader"), and eventually become Kings and Queens of Narnia reigning as a tetrarchy. Although introduced in the series as children, the siblings grow up into adults while reigning in Narnia. They go back to being children once they get back to their own world, but feature as adults in "The Horse and His Boy" during their Narnian reign. All four appear in "The Lion, the Witch, and the Wardrobe" and "Prince Caspian"; in the latter, however, Aslan tells Peter and Susan that they will not return, as
The Chronicles of Narnia a likely influence. The manuscript for "The Lion, the Witch and the Wardrobe" was complete by the end of March 1949. The name "Narnia" is based on Narni, Italy, written in Latin as "Narnia". Green wrote: "The Chronicles of Narnia's" seven books have been in continuous publication since 1956, selling over 100 million copies in 47 languages and with editions in Braille. The first five books were originally published in the United Kingdom by Geoffrey Bles. The first edition of "The Lion, the Witch and the Wardrobe" was released in London on 16 October 1950. Although three more books, "Prince