Wanderlust World Wanderlust World The indigenous language spoken at Mission San Juan Capistrano was Acjachemen (also called Juaneño), a Uto-Aztecan language of the Acjachemen people.
It was also used at nearby Missions San Luis Rey de Francia and San Gabriel Arcángel. Today, Acjachemen is classified as extinct—no known native speakers remain—though revitalization efforts continue among descendants.