The Tale Got Better With the Telling

[Angrboda]

Well, yes, Astro, it was a bit of cheek. You apparently don't watch the sci-fi crime drama Fringe. One of the main characters, Walter Bishop, who is something of a cross between a mad scientist and the absent-minded professor, is continually getting his lab assistant Astrid's name wrong. It's a running gag.

Anyway, for what it's worth, the somewhat inverted chronology at the head of this thread sounds somewhat far-fetched to me, but then one can make a decent argument for putting them in any random order; what that most likely tells us is that there isn't enough quality information to draw any conclusions, aside from the most gross, such as that a text or oral tradition preceded them and informed their content, rather than them being independently derived, and so forth.