Storm Kings

From Asoiaf

The Storm Kings ruled one of the Seven Kingdoms from Storm's End.

The Storm Kings slew the last of the River Kings and conquered all the way to the Neck.

Three hundred years later King Arrec lost the riverlands to Harwyn Hardhand, King of the Isles.

The last Storm King, Argilac the Arrogant was defeated and slain by Orys Baratheon. Aegon the Conquerer rewarded Orys by granting him Argilac's castle, land and daughter. (GoT, App)