My Mix family research has been able to go back far enough to identify the towns from which people emigrated before coming to the US. This is my maternal grandfather's line and includes lots of very English names like:
Bishop
Bliss
Bosworth/Bozworth
Bourne
Bowen
Brotherton
Brown
Burnet
Capen
Chickering
Churchill
Clark
Collins
Cooper
Daggett/Doggett
Deming
Elson
Ensign
Fiske
Foote
Foys
George
Howland
Ide
Kent
Kingbury
Manross
Marshall
Mix
Palmer
Peck
Rockwell
Rowning
Royce
Rutherford
Sims
Smith
Sutton
Tilley
Trowbridge
Turner
Wheatlie
Of course there are a few notable exceptions in calling these English, like the two Welsh surnames (Bourne and Bowen) and the Burnet name which although Thomas Burnet himself came from Braintree in Essex, the Burnet family is actually Scottish and from the Borderlands area of southern Scotland.
As a visual to help me, I went to My Maps in Google and put pins in each town that my Mix line immigrant was born in. As you can see below, it really helps show the clustering of where this line of ancestors comes from (click to view larger):
So I can see with this that other than Wales and Scotland as mentioned earlier, the Mix ancestors are very clustered in the southern third of England, with a special concentration in East and Southwest England.
After emigrating, this is a very New England-centric line - they came to Massachusetts and Connecticut and those that moved, made their way to Rhode Island, or to Vermont, but then eventually to the Finger Lakes region of New York, which is where my Mix line ends up.
All in all though, a great visual!!