The "Territorial Legislature" created Jackson County on January 12, 1852, from the southwestern portion of Lane County and the unorganized area south of Douglas and Umpqua Counties. It included lands which now lie in Coos, Curry, Josephine, Klamath and Lake Counties. Gold discoveries in the Illinois River valley and the Rogue River valley near Jacksonville in 1852, and the completion of a wagon road connecting the county with California to the south and Douglas County to the north led to an influx of non-native settlers.