§ Of Túrin Turambar The Silmarillion

And he answered: 'Níniel is gone for ever. The Dragon is dead, and Turambar is dead; and those tidings are good.' The people murmured at these words, saying that he was crazed; but Brandir said: 'Hear me to the end! Níniel the beloved is also dead. She cast herself into Teiglin, desiring life no more; for she learned that she was none other than Nienor daughter of Húrin of Dor-lómin, ere her forgetfulness came upon her, and that Turambar was her brother, Túrin son of Húrin. '