For fierce raids, the Ironmen are titled the "terror of the seas". They worship the Drowned God, who "had made them to reave and rape, to carve out kingdoms and write their names in fire and blood and song". The appendix of "A Game of Thrones" summarizes that the Ironmen once ruled over the Riverlands and much of the western coast of Westeros. When Aegon the Conqueror extinguished Harren the Black's line, he chose House Greyjoy as the new rulers of the Ironmen.