The Quechan, or Yuma, are a Native American tribe who live on the Fort Yuma Indian Reservation on the lower Colorado River in Arizona and California just north of the Mexican border. Despite their name, they are not related to the Quechua people of the Andes. Members are enrolled into the Quechan Tribe of the Fort Yuma Indian Reservation. The federally recognized Quechan tribe's main office is located in Winterhaven, California. Its operations and the majority of its reservation land are located in California, United States.

Juan Bautista de Anza Bezerra Nieto was an expeditionary leader, military officer, and politician primarily in California and New Mexico under the Spanish Empire. He is credited as one of the founding fathers of Spanish California and served as an official within New Spain as Governor of the province of New Mexico.