In 1845 the Ngati Whatua, with the concurrence of representatives of the Waiohua people, sold a block of land which included Maungakiekie / One Tree Hill to a merchant, Thomas Henry. The Government under its preemptive rights excluded 115 acres of the hill itself from the sale and this was vested in the Crown. This is now One Tree Hill Domain. In 1853 Brown & Campbell purchased Henry's land surrounding the recently protected One Tree Hill Domain. This land ultimately became Cornwall Park in 1901.