CuDasthene was a dragon who lived during and after the Age of Fire.
He was conceived by Wistala and (secretly) by DharSii, but according the agreement Wistala made with Scabia, the clutch was given in adoption to Aethleethia.
NaStirath was officially believed to have sired the clutch.
Aethleetia agreed to not allowing a clutch-fighting, so all the males of the clutch survived.
CuDasthene, alongside his siblings, were at first raised in a pampered way in the halls of Vesshall and he soon grew as the stronger of the three males.
During the crisis with the Dragon Empire, all the hatchlings were assembled to make their contribution to organize the evacuation.
Fate[]
Alongside his siblings, CuDasthene survived the Age of Fire, and their lives were extremely important for the survival of the dragonkind, being descendants of the rarest of the original bloodlines (the one of Sadda-Vale).
It's not known, if later during his life, CuDasthene or his siblings learned about who truly conceived them. Given the fact that DharShii was his biological father, he may have been among the dragons to be a part of DharShii's will following the latter's death over 1,000 years later. However it should be noted that Aethleethia was also DharShii's cousin so his unofficial clutch may've been part of his will regardless of weather or not they ever knew who actually begat them.