Te Rauparaha conquered many other tribes before 1840. In signing th

However, Te Rauparaha was not happy about European settlement on land that he had not sold. In 1843, he protested against Pakeha settlement by interfering with town planners at which fighting broke out. Te Rauparaha stayed defensive, and the British governor decided that Te Rauparaha could not be trusted. Te Rauparaha was imprisoned without charge.
Taraia Ngakuti Te Tumuhuia
Taraia did not sign the Treaty of Waitangi. It is likely he was

After 1840, he continued his disputes with rival tribes and refused to accept British authority, pointing out that he had not accepted the terms of the Treaty and therefore did not have to follow the laws of the British. He was opposed to selling lands and many disputes over land were to arise during the 1850s.
Tamati Waka Nene
Nene was one of the supporters in the debate at Waitangi over the Treaty,

Nene shared the concerns of other chiefs after signing the Treaty. However, he was not concerned about land loss. Nene helped to re-erect the flagpole that Hone Heke had chopped down, and guard the new one. When Hone Heke’s people chopped the flagpole down again, Nene took this very personally and ended up supporting the British to get back at Hone Heke.
Source: http://www.dnzb.govt.nz/dnzb/
To use this database you can search by occupation, age, sex etc or by person. To find out more about these cheifs you can serach them by name - their whole biography comes up. Skim read to the important aspects about the signing of the Treaty.