It has been helpful. It's nice to know someone else is researching Isaiah.
My interest in him is my grasping at straws trying to get around a brick wall. I am trying to discover who were the parents of my Great Grandmother Eva Abernathy. She was born in NC from 1826 to 1832 depending on which census you care to use. I think she died between 1900 and 1910, and is buried, to the best of our knowledge, in Shelton Cemetery in Bollinger County, MO. She was listed in the 1850 and 1860 census in the household of Caleb Eaker in Bollinger County. I can't find her in 1870. In 1880 she is the wife of Lorance Eaker, Caleb's brother, in Bollinger County. In 1900 she is listed as step Grandmother in the home of Thomas S. Eaker, the grandson of Lorance Eaker and his first wife. I can not find her in the 1910 census.
The connection between Eva Abernathy and Isaiah is very faint, but it's the only connection to one of the Abernathy families I've been able to find. Eva's son Lawrance Abernathy was married to Frances Robinson in 1871 with the minister being David Alexander Abernathy, Isaiah's son supposedly. You can see I don't have much. Also Isaiah's daughter Ama or Amy was listed in the 1880 census of Bollinger County in a group of neighboring families that all seemed to be related in some way. She was living next household to Matthew Abernathy who was a memeber of Caleb Eaker's household in 1860 along with Eva Abernathy and her twins Lawrance and Teletha Abernathy. This Matthew Aberanthy died in 1926 and his father was listed on the death certificate as Lawson Abernathy. Again very faint connection, but it's what I've got. Lawson was married at the time of Matthew's birth, and had a son born that year by his wife. It's confusing and complicated. Maththew Abernathy's death certificate did not list his mother. Lawson was living in Wayne County just west of Bollinger County in 1840. His neighbors were Elijah, Moses and Ira Abernathy as well as Thomas Eaker, a brother to Caleb and Lorance. Ira's son Joel married into the Eaker family. A Grandson of Elijah also married into the Eaker family as did Matthew Abernathy.
Also according to postings on RootsWeb, Isaiah was the son of Miles Abernathy and Ursula Bradshaw. Another of Miles' sons was Nathan who married Eve Cline. I suspect this might be the origin of the name Eva or Eve in the Abernathy family. Nathan had a son named Isaiah who was born in about 1810, and he had a daughter named Eve. Nathan had another son named Seth who had a daughter named Eve. These two Isaiahs and the daughters named Eve are often confused. It makes a certain amount of sense that Isaiah(born 1792) might have named one of his daughters Eva after his sister in law, and she named one of her sons after her brother in law.
Anything you might know that could shed any light at all on this puzzle would be appreciated.