You are on the right track with the Chesterfield Co., SC Agerton's. James R. was a S/O Allen & Sara, & listed in the same census. The other Agerton's listed in the 1850 census of Chesterfield Co., SC are: ALFRED (not Albert)m. Metta (Mary Price)with five children. John Agerton who m. Elizabeth____? (Prob. no children) HH 1060 Thomas Agerton,[Jr.] & wife Elizabeth____. Also Allen & Sarah with six children. Thomas Agerton, Jr. was S/O Thomas Agerton, Sr. of NC & SC. Hope this helps.