This might be the Abernathy Family you are searching:
Caroline T. Sentell, born August 1, 1834 in DeKalb County, Georgia and died November 16, 1913 in Sandy Springs, Fulton County, Georgia.She married John Lafayette Abernathy November 12, 1857 in DeKalb County, Georgia.He was born February 15, 1831 in DeKalb County, Georgia, and died January 8, 1897 in Sandy Springs, Fulton County, Georgia.
Caroline was the daughter of Brittain Sentell, born Jan 27, 1797 in Edgefield County, SC, died April 27, 1846 in DeKalb County, Georgia and Elizabeth Elizabeth Miles, born 1796 in NC, died April 19, 1881 in Fulton County, Georgia.He is buried at the Sentell Baptist Church, Roswell Road, Atlanta, Georgia.She is buried in the cemetery of the Sandy Springs United Methodist Church, Mt. Vernon Road, Fulton County, Georgia.
Britain Sentell was the son of Samuel Sentell, Sr. and Nancy Stephens.Samuel Sentell serve in the American Revolution.The Sentell's came to Walton County, Georgia ca 1809 and moved to DeKalb County, Georgia.The confusing things about searching for these families is the changing of the name of the County of DeKalb to Fulton County in 1850.Previously, what is now called Buckhead was called Irbyville, Georgia.You can find information on this at the Atlanta Historical Center in the records of the late Mr. Franklin Garrett.
Hope this help.Abernathy Road was most likely named for this family.I am a descendant of Britain Sentell's sister, Hattie Louise Sentell who married Rev. Edmund Wiley Reynolds of the North Georgia Conference.