The history deserves a little bit of background, which I take from the discussion from the Waitangi Tribunal. Ngāti Tama and Ngāti Mutunga invaded Rēkohu, the Chatham Islands, in 1835, five years before the Treaty of Waitangi was signed in 1840. They voyaged more than 1,000 kilometres from Port Nicholson, where they had been under threat from Ngāti Toa. Their true ancestral home was in North Taranaki, from whence they had been driven by Waikato tribes moving south in search of arms. This is all part of the 1820 wars, after the musket came to this country. Such rapid tribal shifts were not known to have occurred before. The Moriori welcomed Ngāti Mutunga and Ngāti Tama to the Chatham Islands, and it seems they were willing to have them among them. But later, they were attacked. Moriori offered no resistance, and this was due to the rule of peace known as Nunuku's Law.