Yethanerand was the fanatical first(and unfortunately last) king of the nation of Thyanir, holding that title until the battle of Sundered Pass where he, the majority of his people, and their patron god Hu, perished.
Yethanerand was able to seize control of the region which to that point had been a loose confederation of tribes. He brought fanatical zeal and shrewd politicking to bear unifying the tribes into a theocratic monarchy.
Yethanerand was physically imposing, taller then average but with a girth more in line with his hated enemies, the Dwarves.
The Battle of the Sundered Pass marked a rarity in Nyanthian history where true Divine powers took to the field in open combat. The Dwarven God Yudreth and countless hosts of First One dwarves invaded the mountain kingdom, whereupon Yethanerand called upon his patron to aid him. The ensuing battle weakened the very earth of the kingdom and Mount Hutmrir arose, burying the kingdom in ash and lava.
In the Nyanthian timeline, the kingdom existed in the same era as the Helena-Thoth empire.