Tags: Ethnic Group.
The Bay Miwok were a cultural and linguistic group of Miwok a Native American people in Northern California who lived in Contra Costa County. They joined the Franciscan mission system during the early nineteenth century suffered a devastating population decline and lost their language as they intermarried with other native California ethnic groups and learned the Spanish language.The Bay Miwok were not recognized by modern anthropologists or linguists until the mid-twentieth century.
