then tuor stood before turgon son of fingolfin , high king of the noldor , and upon the king 's right hand there stood maeglin his sister-son , but upon his left hand sat idril celebrindal his daughter ; and all that heard the voice of tuor marvelled , doubting that this were in truth a man of mortal race , for his words were the words of the lord of waters that came to him in that hour .