Thank you, Nancy.
I am supposing that as people research, oral/family traditions are being revealed as untrue. I know in one of my family lines there are a oral tradition that is being "set straight" through research. (Which has not settled well with certain family members!) On both sides of my family there have been lots of claims to "Indian Blood", but never has panned out. Culturally, in those times, it would have had a negative impact on the family to have such a marriage.