I don't remember what I've mentioned in this thread vs other places, but has anyone heard the theory that Howland Reed is Jojen? Bits and pieces I've garnered here and there state since the TOJ, (supposedly where his destiny was revealed ) Howland began flowing thru time backwards, knowing his ultimate goal was to deliver the next Greenseer to BR and tCotF? Howland was forced to make some sacrifice to save Ned (and Bran by default) using time travel/ magic, causing this reverse flow...
This theory assumes ALOT, one of the major points being Cranogmen are close relatives of tCotF (short in stature, use magic, etc). Another is that Greywater Watch, always moving, but moving back and forth thru time...hence it is hard to find.
I have issues with this, mainly that it redirects the TOJ to be more about Bran than R+L=J. While it does help explain Jojen's sense of impending doom throughout the journey north and Jojen paste, it assumes a lot that doesn't ring very Martin-esque. Maybe it is a nod to the book "Howl's Moving Castle" (1986)
but beyond Howl being a wizard and the castle opens portals, I don't see the relevance...I didn't read the book, though. Just plot summary in link.