The seventh King to rule over Arnor, the son of KingTarcil. He ruled the North-kingdom in a time of peace, long before the troubles came that would overwhelm and destroy it. He was succeeded as King by his son Valandur.
Notes
1
The date of Tarondor's birth appears only in The History of Middle-earth volume XII, The Peoples of Middle-earth. It cannot therefore be considered completely reliable.
2
Tarondor's name is not explained, and its full meaning is not completely clear, but it seems to mean something like 'king of stones', or perhaps 'stone king'. There was also a King of Gondor named Tarondor, and in his case the full name might be taken as 'king of the stone land' (i.e. 'King of Gondor'). Clearly, however, that specific association with Gondor cannot apply to the Tarondor who ruled over Arnor.