Danu, a Hindu primordial goddess, is mentioned in Vedic texts. The word Danu described the primeval waters which this deity perhaps embodied. She is called the mother of Vrtra, a demonic personality, who does combat and is defeated by Indra. In later Hinduism, she becomes the daughter of Daksa and the consort of Kasyapa. A.G.H.
Jordan, Michael, Encyclopedia of Gods, New York, Facts On File, Inc. 1993, p. 61