The Cochise County Cowboys is the modern name for a loosely associated group of outlaws living in Pima and Cochise County, Arizona in the late 19th century. The term “cowboy”, as opposed to “cowhand,” had only begun to come into wider usage during the 1870s.In that place and time, “cowboy” was synonymous with “cattle rustler”.Such thieves frequently rode across the border into Mexico and stole …

https://en.m.wikipedia.org/wiki/Cochise_County_Cowboys