The House descends from the Grey King, a legendary figure from the Age of Heroes. The Greyjoys became the lords of the Iron Isles during the Targaryen Conquest: after Aegon I extinguished House Hoare, he allowed the ironborn to choose who would have primacy over them. They chose Vickon Greyjoy and his line. The Greyjoys have ruled ever since, from their formidable castle of Pyke. The ironborn, however, did lose the Riverlands, which were granted to Edmyn Tully and his descendents. Thus relegated to their dismal homeland and constrained by the king's peace, the Greyjoys have kept themselves distant from the other Great Houses, rarely taking part in events on the mainland (which they call the "green lands"). At various times they have tried to return to their ancient practices of raiding the western coastlines, such as under Lord Dagon. Dagon and the ironmen raided the coastal areas of Westeros, sacking the town of Little Dosk. Lord Beron Stark was gathering his forces and House Lannister was building ships in an effort to drive Lord Dagon and his ironmen back to the Iron Islands. Six years after holding aloof during Robert's Rebellion, Lord Balon Greyjoy led his own rebellion against the Iron Throne, declaring himself King of the Iron Islands. He was defeated, his fleet burned and his two eldest sons Rodrik and Maron were slain during the war. His last son Theon was given as a hostage and ward to Lord Eddard Stark and he again swore fealty to House Baratheon of King's Landing. Since their revolt, the Greyjoys have been as insular as ever. With Theon living in the green lands, Lord Balon raised his daughter Asha as his heir. Balon exiled his brother Euron when he raped the salt wife of their brother Victarion, Lord Captain of the Iron Fleet. Victarion was forced to kill his wife to retain his honor. Since then Euron has sailed the world aboard the Silence, reaving and pillaging, unwelcome in the Isles while Balon still lives. Another brother, Aeron Damphair, had been changed by his experience of washing overboard during the Battle of Fair Isle, and became a priest of the Drowned God.