DNA testing of the Kennewick Man skeleton shows that the deceased was related to modern American Indians, and suggests a relationship to the Colville tribe which claims the skeleton, but not conclusively.

I hope that further research on living people and other ancient finds makes it possible to get a more conclusive answer.

If a closer relationship were established, that would be very interesting scientifically, as it would show that a small ethnic group continued to live in the same area for 9,000 years.