There is no Indian blood in this particular Whittington family unless it came from one of the wives who married in and I have found no evidence of that.
I have researched this family back to the 1730s in Bedford Co. VA and their entire history is in my book, "Everyone's A Whittington," which is available.
Also, two of the male descendants of this family have had their DNA tested and they match; neither of them has Indian DNA. For those who may not be familiar with Y-DNA testing, it follows the male line from the earliest ancestors right up to current times. DNA indicates that our Whittington family originated in England and does not contain Indian ancestry on the Whittington side.
Those interested in learning more about this Whittington family may email me at firstname.lastname@example.org