The Elizabeth Adair who sued Fergus Cavin for mare abuse is the widow of Robert Sidney Adair. She was previously married to a Huffman and they had two children, Adam and Sally. This is the Adam that was witness in the suit. I don't know of any Cherokee connection. Of interest, there were two Elizabeth Adairs in Pendleton Co. in the late 1700's. One seems to be associated with John Adair (perhaps his sister). John was the father of several sons (Walter is one I remember), who intermarried with the Cherokees.