Ūiramaitai signed the East Coast sheet of the Treaty of Waitangi between 5 and 12 May 1840 at Tūranga (now Gisborne). He was a Te Aitanga a Hauiti rangatira (chief).
In 1898 the Native Land Court validated certificates of title, including one for Te Uri Maitai for the Puhatikotiko No. 1 Block, which he had been paid £12 for in 1882.