I've got (vague) information regarding Austin LAMPKIN and Frances LEWIS?? (possibly ELMORE) at http://www.lampkin.nethttp://www.lampkin.netThis might help you in your research.
Austin's line regained(?) the "P" in the name by the 1870 census.
Austin is the only child of Charles Austin LAMKIN and Elizabeth KENER (or KENNER). Charles Austin is first son of George LAMKIN and Rebecca HUDNALL. (Ancestry continues as Matthew5, Peter4, George3, George2, Thomas1 if my info is correct.)
I would enjoy learning more about Keturah J. LAMPKIN and any other LAMKIN/LAMPKINs in your line.