Thanks Katherine. Very interesting study.

But I wonder why scholars feel the need to quote someone from the Bass 
family? Professor Rountree started this nonsense. John Bass married a 
Nansemond Indian woman in 1638. There is no evidence that their descendants 
had anything to do with the Nansemond tribe or that there was ever another 
Indian in their ancestry. There is proof that John's grandson William Bass 
married Sarah Lovina, the "Molatto" daughter of a "Negro" woman slave of 
Captain John Nicholls in 1729 and that they were the ancestors of those 
members of the family who remained in Norfolk County. The present-day chiefs 
of the Bass family would be considered white anywhere outside Norfolk County 
and surely have more African than Indian ancestry. Most of their descendants 
spread to various counties in North Carolina and married free African 
Americans.
http://www.freeafricanamericans.com/bailey-berry.htm
Paul