Unless you look at each specific card, there is no way for me to tell you exactly where these people were living at any given time.
I can, however, tell you that the rolls verify that there were four Bushyhead's that were on the Emigration Roll of 1817. Understanding the roll was taken three years before the birth, it still establishes, without conflict, that the Bushyheads were Cherokee. All this particular roll says is that they were part of the nation, and were on tribal land. It doesn't tell where.
The ones I found: Bushyhead (probably an older person that only used one name), George Bushyhead, Isaac Bushyhead, and Nancy Bushyhead. It is possible that these people were from GA or TN...just by the dates of the rolls.
The next roll was done in 1835, so your person (if registered) would be here. most likely - unless the family relocated. We show three unnamed Bushyheads, Jessee, and Nancy. Nancy, Jessee, and one Bushyhead were from TN, the other two unknown Bushyheads were from GA. [Hmmm.]
The next time a Bushyhead comes up on the rolls is when George appears on the Chapman Roll in 1852.
The generations keep going as we get nearer to today. On the Swetland Roll of 1869, there are a few listed. Anna, George W., Nancy, Rachel, Sarah, and Waleoah.
By 1883 there was only one listing, George.
Ben and Nancy Bushyhead were listed on the Churchill Roll of 1908, but you still would need to locate their card(s) to find out where. All I have for a clue is that they were in the Eastern Band. Oh, they also made it onto the Guion Miller Roll of 1909.
On the last census of the Eastern Band, the Baker Roll of 1924, Ben, Nancy, Joel, and Robert are listed. Their numbers are consecutive, so I would believe the two new givens are the children.
Lastly, I've not heard of a list from the purchase you speak of. It may well exist, but I'm not familiar with it. Sorry, but I'll be of no use to you there.