Thomas Horn Jr., was an American cowboy, scout, soldier, range detective, rodeo performer, and Pinkerton agent in the 19th-century and early 20th-century American Old West. Believed to have committed 17 killings as a hired gunman throughout the West, Horn was convicted in 1902 of the murder of 14-year-old Willie Nickell near Iron Mountain, Wyoming. Willie was the son of sheep rancher Kels Nickell, who had been involved in a range feud with neighbor and cattle rancher Jim Miller. On the day before his 42nd birthday, Horn was executed by hanging in Cheyenne, Wyoming.

Overview

Thomas Horn Jr., was an American cowboy, scout, soldier, range detective, rodeo performer, and Pinkerton agent in the 19th-century and early 20th-century American Old West. Believed to have committed 17 killings as a hired gunman throughout the West, Horn was convicted in 1902 of the murder of 14-year-old Willie Nickell near Iron Mountain, Wyoming. Willie was the son of sheep rancher Kels Nickell, who had been involved in a range feud with neighbor and cattle rancher Jim Miller. On the day before his 42nd birthday, Horn was executed by hanging in Cheyenne, Wyoming.

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