Lawrence, Kansas
Prior to Kansas Territory being established in May 1854, most of Douglas County was part of the Shawnee Indian Reservation (created in 1830). During this period, the Oregon Trail ran parallel to the Kansas River, roughly through the area where Lawrence would eventually be situated and a hill known then as "Hogback Ridge" (i.e., Mount Oread, which sits on the water divide separating the Kansas and Wakarusa River). This area was used as a landmark and an outlook by those on the trail. While this territory was technically unopened to settlement prior to 1854, there did exist a few "squatter settlements" in the area, especially just north of the Kansas River.
Ellsworth County, Kansas
In 1854, the Kansas Territory was organized; and in 1861 Kansas became the 34th U.S. state. Ellsworth County was established February 26, 1867. The county was named after the old Fort Ellsworth, named in honor of 2nd Lieutenant Allen Ellsworth of the 7th Iowa Cavalry (Company H), who supervised construction of the fort in 1864 during the American Civil War. On November 17, 1866, the fort was renamed Fort Harker in honor of General Charles Garrison Harker who had died on June 27, 1864, from wounds received in an abortive offensive action in the Battle of Kennesaw Mountain. The fort was subsequently moved to a new site about one mile to the northeast, and the old fort's remaining buildings were ordered torn down in June 1867.