advice on how to track it again?

My mother has been attempting to trace our heritage for many years, and has been led to this chief as part of it. I would be very interested in talking to anyone having more information, or actual documentation about him, his children, close friends, etc... The Asbille Family History was a book written by George T. and Donald E. Bennett, Genealogists from Pulaski, TN.. In this book, It states that William Asbille, son of Dorothy Ross (sister to George Ross, one of the signers of The Declaration of Independence), settled for some time in Duncombe County, NC.. There, he wooed and married the daughter of Samuel Becknell. This daughter (named Malinda Ross) was of Cherokee parentage. A Cherokee Chief, believed to beDragging Canoe (son of Attakullakulla), had been close friends with the Becknells, and often stayed on their land and hunted with Samuel and his son Thomas. Many times, the Chief brought his unnamed wife with him and slept in a wigwam on the land. On one of these occasions, the Becknell family went to greet them, only to find an empty wigwam. While searching the land, they heard the cry of a baby. In further searching, they found a baby tied to it's dead mothers breast (which was supposed to be Cherokee custom when a mother died during child birth). The Becknells took this child home and raised her as Malinda Ross. She is my great (x5) grandmother. If I am truly of Cherokee bloodline (of which I