I have family info about Sarah A. Dean.Actually, there are two of them.Dean is her birth name, not married name.
William F. Dean had 9 children.His first was Samuel Dean born 1830 Georgia.Samuel's second child was Sarah A. Dean born 1854. ...back to William F. Dean.His first two children were born in Georgia.Between 1832 and 1846 he move to Alabama.In Alabama he had 6 more children, one of which was Sarah A. Dean, born 1854 Tallapoosa County, AL.She was the sister of Samuel Dean described above and aunt to his dau. Sarah A. Dean born 1854.
I do not have a birth place for Sarah A. Dean, dau of SamuelDean.The fact her father was born in Georgia suggests she may have been also, but as he was the oldest of his siblings, he certainly was needed around the farm in Alabama.
I know that Samuels distant descendants eventually moved to Arkansas.This is where his descendant Dizzy Dean, the famous baseball pitcher, was born.I am still researching that family.Is any of this info helpful or is your focus on Sarah A. Dean as the spouse of Nathan Dean?