With the discovery of Nōti Raureka (Browning Pass) by its namesake Raureka, of the West Coast Ngāti Wairangi, Ngāi Tūhaitara quickly developed an interest in Te Tai Poutini for the pounamu that can be found there. It is said to have been Tūrakautahi's decision to learn the genealogies and traditions of Ngāti Wairangi and Ngāti Tūmatakōkiri, the former of which already shared a common ancestry with Ngāi Tahu through the ancestors Tura and Paikea, and the latter being of the like Ngāti Māmoe, Ngāi Tara, and Rangitāne. A similar approach was also taken to learn Waitaha's genealogies and stories. Myths that Ngāi Tahu brought to the South Island themselves include those of the Takitimu Mountains (being the ) and the .