Strong feeling that it's headed there. Two creatures who can fight the cold the Direwolf and the Dragon. Same age. Both have known lovers. Clearly Jon is not staying at the Wall forever. I think his identity, when it is revealed will somehow tie him to Daenerys. If he is Rhaegar's other son. I somehow see their fates collide before the end. When "The Others" come, maybe there will be Dragons at the Wall