re: Crackpot ASOIAF Theories SPOILERS

I was rereading a feast for crows and don't know if this has been discussed in this thread but right before Aemon dies he goes over the prophecy for AA while thinking it's Dany but it made me further believe it was Jon. Aemon says " Rhaegar was certain the bleeding star had to be a comet" I believe the bleeding star was Sir Arthur Dayne the sword of morning of starfell that bled the day Jon Snow was born. This may have been discussed but I havn't really been in this thread and its way to long to go back and check.