This theory, hc, whatever it is depends exclusively on names. Many characters, spelles etc on the universe have a Greco-Roman origin (ex Hermione, Nox), could that be for the Lovegoods as well? Xenophilius (Greek: Ξενόφιλος) is a Greek word-name with the meaning of the one who loves (PLANOTICLY) strangers. Now Pandora (Greek: Πανδόρα) in Greek Mythoogy, Pandora was the first woman created by the olympians and she had a "box" with the daimons of the cosmos. Last but not least is Luna (Latin version of the moon) Luna is the Latin counterpart of the Greek goddessof the moon Selene (Greek: Σελήνη). Luna and Pandora fine but Xenophilius?! What do you think?
