The King of Arnor
The King of Arnor is the absolute monarch ruler of the Northern kingdom of Arnor and it's territoires.
They are the decendants of the Royal House of Stark and are of the blood of the Dúnedain. The title of King of Arnor in addition to being a station of rulership over the territory of Arnor is also an umbrella title for all the subsidiary titles of the Kings of Winter which includes Kingship over the isles of Skellige, Mangar of the Giant clans, King of the Seven Dwarf realms, King of Rivendell, Mithlond, Lothlorien and the woodland Realm, Lord Protector of the the Shire and the sacred forests.
The symbols of station held by the Kings of Arnor include several heirlooms and regalia such as the Ring of Barahir, the Crown of Winter, the sword of Andúril and the Sceptre of Annúminas. These objects are the prossessions and birthright of the Kings of Arnor and have been passed down through the House of Stark and Telcontar for centuries since the founding of the house in the third age.
