On 16 May 1840, Anglican Church Missionary Society missionaries Henry Williams and Octavius Hadfield travelled to Waikanae, where 20 signatories from Te Āti Awa added their marks to the Cook Strait (Henry Williams) copy of the Treaty of Waitangi.
The fourth signatory on the day, Ngā-raurekau, is likely to have been a woman. Apart from Matahau, who wrote his own name, each of these signatories made a unique mark next to their name.