Most know of this battle as the Wairau Affray. "During 1845, Te Rangihaeata and his section of Ngati Toa Rangatira supported the claims of their allies living on disputed land north of Rotokakahi in the Hutt Valley. These tensions led to several violent incidents between Maori, settlers, and Crown troops [including in Battle Hill, which is in Pāuatahanui in Mana]. The Crown subsequently took political and military action against Te Rauparaha and Te Rangihaeata in order to establish its authority and reduce the power and influence of the senior Ngati Toa Rangatira chiefs. In July 1846 the Crown seized Te Rauparaha and several other Ngati Toa Rangatira chiefs at Porirua. The Crown detained Te Rauparaha without trial for 18 months. Crown forces pursued Te Rangihaeata who withdrew into [the] Horowhenua. … By 1926 most of the Ngati Toa Rangatira reserves at Porirua had been alienated."