[MagicHef]

Originally Posted by Amnorix

1. The Mad King had something of a crush on Joanna Lannister (Tywin's wife, and the mother of Jaime, Cercei and Tyrion).

2. The opportunity was there, in the sense that Tywin was for a very long time the Hand of teh King, and therefore lived in King's Landing, presumably with his wife.

3. In the books, Tyrion's hair is described as a whiter shade of blonde. Lannister's are blonde, while Targaryens are typically like a silvery-white.

4. Tywin himself seems to have some doubts. He says things like "since I can't prove you're not my son", and his last words are, literally, "you're no son of mine".


Personally, I think Tyrion is MORE like Tywin than any of his other children, but...

If any Lannisters are secret Targs, I think the incestuous twins, one of whom is going mad and is obsessed with wildfire, are the most likely.