With the wheels of Season 6 beginning to turn, it looks like a possibility that will we discover some secrets about Tyrion Lannister, including his true parentage, and one of the most plausible theories out there is the A+J =T theory.
What is A+J=T
For those of you who don't know what this is, the theory is that Tyrion Lannister's actual parents are Joanna Lannister and Aerys Targaryen, also know as the 'Mad King'. This would give Tyrion the biggest claim to the Iron Throne, as he would be the oldest male Targaryen.
What is the story behind it?
The story goes that the marriage between Aerys and his sister, Rhaella, was not a happy one; though she ignored most of the king's affairs. King Aerys took liberties with Lady Joanna during her bedding ceremony, to Tywin's displeasure, whilst the Mad King had some sort of weird infatuation with Joanna Lannister. Lady Joanna then departed at once for Casterly Rock. Before long, Joanna gave birth to Tyrion Lannister. He is described as a horrid creature, who had one green eye and one black with hair so blonde it seemed white.
How is it valid?
Well most importantly, Tyrion Lannister is described as a horrid creature, who had one green eye and one black with hair so blonde it seemed white. And because Lannisters are famous for blonde hair, and Targaryens are famous for white hair, this seems to be a good mixture of the two, also Tyrion's dwarf nature, and two different coloured eyes could show a bad mixture between two bloodlines, the Lannisters and the Targaryens.
Also, Tywin Lannister hints at Tyrion's true parentage by saying:
Mens Laws give you the right to bear my name and display my colors since I cannot prove you are not mine.
And then, before he gets shot by a crossbow, makes it obvious by saying:
You are no son of mine!
This must be the main reason for Twyin's hatred for Tyrion, as he is a walking, talking reminder of Joanna's relationship with the Mad King. still ensures Tyrion lives a fairly comfortable life under the Lannister name, as he is still Joanna's son, and Tywin genuinely loved Joanna, but still tries to indirectly kill him in the process.
Also, this theory would fit very niciely into the prophecy of the three dragons and its riders, with Tyrion being a rider, along with Daenarys Targaryen, and Jon Snow (R+L=J).
How can they prove it in the show?
This is where it gets tricky, because the only person in Westeros who has enough evidence to validate it, and enough power for people to believe it, is Tywin Lannister, and he was shot, ironically, by Tyrion Lannister with a crossbow. So it will be quite difficult to get the theory across. One way it could be done is through Bran's mission to become one with nature, allowing him to see Tyrion's true parentage. But Bran has no reason to see this moment, and has no reason to let this truth out, so this is an unlikely scenario.
So that is the basic description of the A + J = T. Are you are supporter of it? Comment below and let me know!