Oddbean

Yeah, if you go to the westeros.org wiki their defense of R+L=J https://awoiaf.westeros.org/index.php/Jon_Snow/Theories on this point is that many Targaryans don't have Valyrian traits. However all those references are from outside of the book series (A World of Ice And Fire, Fire & Blood, The Rogue Prince, etc) which is not very satisfying. GRRM should have put the evidence into ASOIAF itself. I've watched a lot of AltShiftX and various other stuff, not sure I've seen Preston Jacobs. I'll go watch a few.

Lilac eyes. Lean face. Dragon rider. Those are all Valyrian traits. Jon Snow has none. The much younger Rhaenys died in the sack on kings landing at 3. She looked like a Martell. There is enough evidence of Valeryan traits being recessive to keep alive the theory that maybe Jon Snow's father is Rhaegar. I think GRRM might not even know - he seems to like to leave lots of things open ended.

He also retcons things. I was referring to Rhaenys "the Queen who never was." Wife of Corlys Velaryon. Shes grey in the show but dark haired in Fire and Blood (though i think this was retconned from one of the essays).

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