I do not have any information on him. The children of William Drumwright, Jr listed in his will were jones, joseph, richard, nancy, gee, mary, martha. It is possible that james is the son of another brother of william drumwright, jr. i will keep my eyes open.
What state do you live in? The Drumwright Family Tree by Gracie drumwright Dowlan, 1974 is in the Tennessee library but is only available to view in the library. There may be other copies elsewhere.