If the information is not enough to satisfy your research, I can tell you there was a B Timmons in Edgefield SC 1898 as a witness on a land Deed my ancestor's have. I'm sure this was a 'white member', but just maybe there's some information about other 'black Timmons' in the area that may have been related to your family members.
Sometimes you have to chase family all over the state to find out answers