 All of the county's incorporated cities were settled by 1868 with Oxford settled in 1864, Weston in 1865, Dayton in 1868, Clifton in 1869, and Preston by 1868.The Bear River Massacre took place in present-day Franklin County on January 29, 1863.While the settlers at Franklin were effectively governed by Utah Territory until 1872, the settlers were actually located within Washington Territory from 1860 to 1863 and not within the boundary of any county until Shoshone was created in 1861.