"Aye, but this Aegon proclaimed himself the rightful king of the Seven Kingdoms. I've got a letter from him, calling upon House Bolton's loyalty. Apparently, Varys had swapped the babe beforehand, and Aegon conquered the Stormlands with the Golden Company at his back. The Dornish have joined them, and they march against Jaime Lannister, who is leading Tommen's armies."