I suspect... - Edit 1
Before modification by LiterateDog at 29/05/2015 01:04:53 PM
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Who is the 3rd "Targaryen" for the 3rd dragon? Or will Bran control one due to his powers?
Who is the 3rd "Targaryen" for the 3rd dragon? Or will Bran control one due to his powers?
Or is this just irrelevant speculation! 
...the theories that Tyrion may be the third Targaryen are correct.
This iO9 link is a fairly quick layout of the theory. I've read it other places.
Unless Martin pulls an asshole Jordan move and decides to change it just because too many people "figured it out". We all know Taim was Demandred!