 In 1784, a sister mission, the "Nuestra Señora Reina de los Angeles Asistencia", was founded at Yaanga as well.The Gabrieleño occupied the main part of the most fertile lowland of southern California, including a stretch of sheltered coast with a pleasant climate and abundant food resources, and the most habitable of the Santa Barbara Islands.They were perhaps the most culturally advanced group south of the Tehachapi, and the wealthiest of the Uto-Aztecan speakers in California, dominating other native groups culturally wherever contacts occurred.