Sir Orfeo as being a parallel dimension to the everyday world rather than the Land of the Dead as in the Greek myth of Orpheus and Eurydice. The ability to move between one world and the other distinguishes the tale as told in its various British versions such as "Sir Orfeo" and the Shetland ballad "King Orfeo" where the captors are envisaged as inhabitants of a parallel fairy domain rather than as the infernal region of the Dead ruled over by Hades as in the Greek myth. Katharine Briggs sees the tale as related in British folk narratives as being equally influenced
Hades they are impious or evil, or sent to Elysium (Islands of the Blessed) with the "blameless" heroes. In the Sibylline oracles, a curious hodgepodge of Greco-Roman and Judaeo-Christian elements, Hades again appears as the abode of the dead, and by way of folk etymology, it even derives "Hades" from the name Adam (the first man), saying it is because he was the first to enter there. Owing to its appearance in the New Testament of the Bible, "Hades" also has a distinct meaning in Christianity. Hades Hades (; "Hádēs"; Ἅιδης "Háidēs"), in the ancient Greek religion and myth, is the