I think they had their base of operations in Helena ~ but that has yet to be proven ~ they ranged from there across the Great Plains down into Tejas ~ like they knew where to go and where to hide.
If anyone knows a Comanche you might see if they'd be interested in one of those genealogy DNA tests.
The only Indians we thought we were kin to were the Euchee. One of our GGGGrandfathers was married to an Indian woman.
Not too long ago I found out she was his second wife after his first one died. It is through the first one, we are related so technically no kin at all.
For questions about the Comanche, you could ask Prof. David Yeagley...
Descendant of Comanche war chief Bad Eagle...
Blogs here: http://www.badeagle.com/