The wife of Haronga, who was the son of Rangi-pōtiki and Hine-ahu-papa. Their children were a son and a daughter, Rā (the Sun) and Marama (the Moon). Haranga perceiving that there was no light for his daughter Marama, gave Te Kohu in marriage to Te Ika-roa, and the stars (Nga Whetu) were born to give light to Marama.
Nga tokorua a Tongo-tongo, "the two children of Tongo-tongo," is a proverbial term for the Sun and Moon.
- Shortland, Edward. (1882). Maori Religion and Mythology. London: Longmans Green, p. 17.