“My own direct namebearing ancestor 11 generations ago landed in the Jamestown settlement in 1649”
That is very amazing! Did your family remain in VA for all of those generations?
The family remained in Virginia until the about 1840 when they moved to Tennessee.
To further support what was said about how the people who settled North and South came from different parts of England...my family name is Welsh though nobody I know of was from Wales....though that would fit with them being of the more conservative pro Cavalier type. My ancestor sailed out of Bristol in Gloucestershire which is in that region. The choice of location (ie Virginia) and the timing all lead me to think he must have been a Cavalier. All the pieces of evidence point to that conclusion.