Some 200 Cheyenne were encamped in the county when Ballard and Manning were ordered to resume the survey in 1866. While escorting the surveying party along Twin Creek on July 21, soldier Edward Roche of Company I, 2nd U.S. Cavalry, was killed by Indians. They buried him at what later became the common corner of Corinth, Penn, Winfield and Bloom Townships. On May 15, 1868, the survey of Osborne County was at last completed. The boundaries of the county were defined by the legislature on March 3, 1867. The governor named it in honor of Captain Vincent B. Osborne, a Civil War soldier who lost a leg in a battle on January 17, 1865, at Joy's Ford on the Arkansas River. Later Osborne was elected State Representative of Ellsworth County in 1871 and served as Ellsworth County Probate Judge for a number of years prior to his death at age 40 of erysipelas on December 21, 1879. Oddly, Osborne never set foot in the county named after him.