Franciscan friars established Mission Nuestra Señora de la Purísima Concepción de Acuña (also Mission Concepcion) in 1716 as Nuestra Señora de la Purísima Concepción de los Hainais in East Texas. The mission was originally meant to be a base for converting the Hasinai to Catholicism and teaching them what they needed to know to become Spanish citizens. The friars moved the mission in 1731 to San Antonio. After its relocation most of the people in the mission were Pajalats who spoke a Coahuiltecan language. Catholic Mass is still held every Sunday.