King of Rhudaur

The Kings of Rhudaur were the hereditary rulers of Rhudaur, a splinter kingdom of Arnor.
The first king of Rhudaur was the third and youngest son of Eärendur who, following his father's death in TA 861, disputed the ascension of his elder brother Amlaith to the throne and declared himself king of an independent realm.
Rhudaur itself was the most isolated and inhospitable of the northern kingdoms, and it would seem that a significant number of the king's subjects were native Hill-men who resented rule by Númenóreans. The line of Isildur failed first in Rhudaur and the last kings were Hill-men, who allied their realm with the Witch-king of Angmar.
The Hill-men Kings of Rhudaur ruled for some time as vassals of Angmar, but in TA 1409 Rhudaur was finally annexed by Angmar, and the kingship terminated.