I don't have any record of a Millington Abernathy of Maury County Tn.
There was a David Abernathy that lived in Maury County at one time and I believe he was married to Christine Forney.They had a son named Milton P. that was born 23 Mar 1785. Could this Milton be an abreviated name for Millington?
This information came from the Giles County Tn. library from a chart listed as "Robert Master Chart 1-F".