The Juaneno juaneño Or acjachemen are an indigenous tribe Of Southern. California The juaneno juaneño traditionally lived along the coast in an area that is now Part of Orange And san. Diego Counties their spanish name was Given by franciscan priests Of The Mission San, juan capistrano who established it near. their villagesoday the people prefer the name of the Juaneno Juaneño band Of Mission, Indians Acjachemen. Nation they have been recognized as a tribe by the state Of california and petitioned in 1982 for federal recognition as a. tribe