Te Rauparaha
In the summer of 1831–32 Te Rauparaha attacked the Kaiapoi pā (fortified village). Kaiapoi was engaged in a three-month siege by Te Rauparaha, during which his men successfully sapped the pā. They then attacked Kāi Tahu on Banks Peninsula and took the pā at Onawe. In 1832-33 Kāi Tahu retaliated under the leadership of Tūhawaiki and others, attacking Ngāti Toa at Lake Grassmere. Kāi Tahu prevailed, and killed many Ngāti Toa, although Te Rauparaha again escaped. Fighting continued for a year or so, with Kāi Tahu maintaining the upper hand. Ngāti Toa never again made a major incursion into Kāi Tahu territory. By 1839 Kāi Tahu and Ngāti Toa established peace and Te Rauparaha released the Kāi Tahu captives he held. Formal marriages between the leading families in the two tribes sealed the peace.