[Sherman Logan]

I believe Cherokees and Sioux are traditional enemies.

Doubt it. The Cherokees in OK tangled with Comanche, Kiowa and Cheyenne.

But I think the Lakota were too far north for them to have much contact.

Possibly you are thinking of the Crow?

[warchild9]

Note my post. I wrote a paper about massacres of the Crow by the Sioux back in my early historian days, as it were.