Mātenga Paerata signed the Treaty of Waitangi on 28 April 1840 at Kaitāia. Paerata also signed He Whakaputanga – the 1835 Declaration of Independence.
In 1834 he guided the missionary William Gilbert Puckey along Te Ara Wairua, the ‘spirit trail’ to Te Rerenga Wairua (Cape Rēinga) at the top of the North Island.