After King Harren the Black and his sons were killed in the War of Conquest, Aegon the Conqueror had the ironborn select a new House to rule the Iron Islands (under the overall rule of the Targaryens), according to their custom. The ironborn chose Vickon Greyjoy as Lord of the Iron Islands, and House Greyjoy continued to rule over the ironborn by hereditary right for the next three centuries. Vickon Greyjoy's election, however, was not called a "kingsmoot". There has not been a formal Kingsmoot in thousands of years.