Edwin Thomas is my gggf also and I am trying to connect him to the Prince George families. My line from Edwin is Isaac Robert, John M (probably named after Edwin's brother John M, b. 1816 in Va), and Joe Brockwell. Edwin's brother John M died in 1850 of smallpox(1850 Mortality Schedule).
Edwin's children were Isaac Robert, Lurana, William, and James. Years ago I copied some records in the Union City courthouse. One was an 1834 will giving his 160 acre farm and all his belongings to his children with detailed description.
My best projection based on my data is Edwin and Sarah and their son Isaac Robert and her father/brother? William Andrews and John M Brockwell went to Obion County from Virginia in 1833. Lurana was born in 1833 in Tn.
Sure would like to tie Edwin and William Andrews in with the virginia families. Do you have any data at all to help do that?
Please let me hear from you and we can exchange more data.