The bastard who became a King

Harry was a bastard of King Aegon and Mila Velaryon who was from a side branch in Essos. He was then named Lord of Dragonstone. There he escaped with the Queen, the two princes and three princess. To Essos where the Queen died and named Harry King. Then Prince Viserys ran away with Princess Daenerys. Years later Harry finds them in Pentos where Viserys was selling his sister.