The only little glaring problem was that he was not the son of Eddard Stark, but Rhaegar Targaryen. Even with hundreds of years of experience under his belt, Jon was unsure of the precise circumstances of his birth in this life. The runic ancestry matrix showed that his real name was either Aemon Targaryen or Jon Snow and that he was the head of House Targaryen. It would mean that the legality of his marriage was dubious in the eyes of magic. As well as that, the self-proclaimed Aegon the Sixth in the south was fake, for had he truly been the eldest son of Rhaegar, Jon would not be the head of House Targaryen. The Crown Prince somehow married Lyanna despite Elia Martell being alive with two heirs. Unless, of course, his father had managed to annul his marriage with the dornish princess somehow.