The son of Malvegil, King Argeleb I, reclaimed the kingship of all Arnor and took the prefix ar(a) (Sindarin for royal, or kingly) in token of this. Cardolan did not oppose this as there the Dúnedain had grown few, but the kingdom of Rhudaur resisted the claim by Argeleb, led by an evil hill-chief who was in secret league with Angmar. At this, Argeleb decided to fortify the Weather Hills to resist an invasion from the east by the forces of Angmar and Rhudaur, but he was slain in battle in the year TA 1356 along the frontier.