re: How many of you are really Native American?

You could have had a 100% caddo Indian relative from say 1824 but due to the fact that the chromosomes are randomly sorted into the ne t generation, that 100% could disappear from your lineage after just two generations. Or 3 or 4.
They didn't lie to you.

And that caddo Indian had 200 years of Spanish people to have had as sex partner with caddo Indian, say in 1723.

So the caddo squaw was not 100% caddo when Frenchie showed up in the crew that came from nova Scotia.