Rah has blond hair and violet eyes? I bet he's a long-lost Targaryen... he's the third, irradiated, head of the dragon! Rhaegar + Cat(elyn) = Rah! They put the kids on a raft because Lannister soldiers were at the gates!
...Yeah, I've read too much ASoIaF. (If there is such a thing as "too much ASoIaF", that is.)