Celebrindor the son of Celepharn ruled Arthedain during a time of relative calm. He was the last King to enjoy a peaceful reign, and the last not to know the name of Angmar. Soon after his death, evil things began to stir again, and the Lord of the Nazgûl came into the north as the Witch-king, to found the realm that would eventually destroy Celebrindor's kingdom.
Celebrindor ruled Arthedain for eighty-one years, and was succeeded by his son Malvegil.
The date of Celebrindor's birth appears only in The History of Middle-earth volume XII, The Peoples of Middle-earth. It cannot therefore be considered completely reliable.