Te Tūtahi signed the Tauranga sheet of the Treaty of Waitangi in April or May 1840 at Tauranga. He was a Ngāi Te Rangi rangatira (chief).
For further information and sources see Debbie McCauley, The Treaty of Waitangi in Tauranga: Te Tiriti o Waitangi ki Tauranga Moana: https://debbiemccauleyauthor.wordpress.com/heritage/cultural-heritage/te-tiriti-o-waitangi-ki-tauranga-moana-treaty-signatories