DNA cannot connect you to a tribe, only to people. The way to find a Cherokee ancestor is to use tradiitional genealogy to follow the paper trail back to a time and place where the Cherokee lived (originally the area where North Carolina, Tennessee, South Carolina, and Georgia come together). There are numerous Cherokee rolls available on line. In 1851 all the Cherokee people living in Indian Territory and Cherokee living East of the Mississippi were enumerated. They can be found on either the Drennan, Old Settler, or Chapman rolls. These three rolls together form a very comprehensive listing of Cherokee people at that point in time. The only Cherokee missed by the 1851 rolls were a small group in Rusk County, Texas, and another small group that went to California in the Gold Rush. The Eastern Cherokee (Guion Miller) applications of 1907 provide a wealth of genealogical information, although only about 1/3 of the applicants were actually Cherokee.