In the Mangaian legend of origin, Rongo's sons by his wife Tavake (his daughter by his wife Te-po-tatango), Rangi, Mokoiro, and Akatauira, lifted the island of Mangaia up out of the underworld, becoming the first settlers and the ancestors of the Nga Ariki tribe,[11] with Rangi becoming the first chief. The traditional name of the island was A'u A'u, which literally means 'terraced', short for A'u A'u Nui o Rongo ki te Ao Marama ('Great Terraced Land of Rongo in the Land of Daylight').[12]