In 1863, the first mining town, Wickenburg, was established in what would become Maricopa County, when it was created from parts of Pima, Yuma, Mohave, and Yavapai Counties on February 12, 1871. Spanish Franciscan missionary Francisco Garces claimed the name "Maricopa" came from the Pima word for the Pipatsje, a Yuman tribe from the Gulf of California that migrated to Arizona's central valley long ago. Ten years after Maricopa County was established,...