User blog comment:B214/Question and Answers 3/@comment-25222726-20140630210600/@comment-73.178.133.185-20140630220224

@Otaku4469

What he was asking was whether we think its a conicidence that Ishibumi had Vali become Odin's foster-son in High School DxD when in real-life Norse mythology Odin has a son named Váli. (Interestingly enough there's another Váli who is the son of Loki...)

@Dragoniahadesking

Knowing Ishibumi, who has had quite a bit of the story pre-planned and has done quite well in incorporating names and terms from the various mythologies "correctly", I'd say that most likely it is not a mere coincidence.

Thanks for discovering this fact because it helps further confirm that his name should be translated as Vali and not "Vary" which appeared in one of the images. (In a similar image, Serafall's name is translated as Seraphoroux, which actually fits the original katakana better. It also matches with the fact that her name is derived from Sayla Mass, Lalah Sune, Four Murasame, and Roux Louka, as revealed in the Japanese wikipedia article.)