Many Ghibli films, like The Secret World of Arrietty and Pom Poko are simply masterful retellings of older folktales, such as The Borrowers, and Japanese folklore regarding the tanuki spirits respectively.
In Gaelic myth, Aed was one of the Children of Lir, a popular folktale that Irish children still learn today. The English gave themselves a translation of this fiery god, a name. Aed became Hugh.