1970s environmental campaign starring "Iron Eyes Cody" born as Espera Oscar de Corti..Italian heritage but claimed to be Cherokee-Cree. According to Wikipedia, "He lived his life as if he were of indigenous Native American descent, both on and off the screen, and strongly supported American Indian causes...In 1995, the Hollywood American Indian community honored Cody for his contributions to the representation of Indian life."

 

That's acting