Visit the SC Archives at this link http://www.state.sc.us/scdah/http://www.state.sc.us/scdah/ which is the South Carolina ARchives mainpage and find on the left hand side their online documents indexed.
When you find the search boxes here is what you do: In the first search box right click the tab bar and choose ALL DATA BASES
On the second space chose INDIVIDUAL
and on the third line type in TOWLES
LEAVE ALL OTHER SPACES BLANK.If you fill in anything else you will limit your search.
By searching for the individual Towles you will find what I did and you will find the Towles in SC and I do believe that these are Towles from Virginia.
I have Braswells in this same area of Edgefield and Newberry SC where the Towles are and your descedent Richard Towle has a Will in VA that has an ancestor of Susanna Braswell in it.
If you have any problems email me at firstname.lastname@example.org Kay Braswell Dawson