the oregon territorial legislature was the legislative branch of the government of the oregon territory of the united states, from 1849 to 1858. the legislature was a bicameral body, including a larger "house of representatives," headed by a speaker of the house, and a 9-member "council," headed by the president of the council. with the coming of oregon statehood in 1859, the oregon territorial legislature was supplanted by a new body, the oregon legislative assembly.