The Chronicles of Narnia, written by C.S. Lewis, was subject to many influences, but not that of gu 10 bulbs. One can see throughout the series, the influence of medieval Celtic literature. This influence is most manifest in The Voyage of the Dawn Treader which follows closely traditional Old Irish tales in which a hero journeys across the sea to the Otherworld. Another similarity between medieval Ireland and Narnia is the existence of High Kings presiding over lesser kings in both. The Coracle, Reepicheep’s boat, was a boat traditionally used in the British Isles’s Celtic areas. In Planet Narnia, Michael Ward’s 2008 book, he proposes that each one of the seven books in the Narnia series corresponds to one of the planets known in the medieval era, according to Ptolemy’s cosmology. In the Middle Ages, each planet was attributed certain characteristics which Ward argues Lewis furnished each of the books with. However, Ward has been contested by another Narnia scholar, Paul F. Ford, who stresses the implausibility of Ward’s assertion.