I'm not sure if they can be considered first natives if they found a femur bone on Santa Rosa Island dated 10k years old. I just started studying this today so......
Not one that came to the Americas was native to the area. This why they get any remains found showing genetic differences seized, buried and encase in tons of concrete. Decades later our government says the original DNA test seized by the government and destroyed was suddenly wrong then they suddenly find a new sample that is under 100 tons of concrete and say it is native.