I have some info re Jonathan Abney 1821-1873 Rockcastle Co KY m. Ollie Jane Sexton. This is NOT my direct Abney line so I don't know the correctness of it--maybe some clues for you though. Ollie shows to be the daughter of Archibald Sexton and Jane Ballenger (maybe connected to your later Ballenger). Jonathan and Ollie had children Mary Jane 1842, Julia Ann 1844, Louisa 1845, Archibald Taylor 1847, Ollie Jane 1849, Sarah 1851, Wm. A. 1853, Samantha 1855, Reuben 1858, Marion 1861, John 1864, and Squire 1865. Don't know where I got these names.
Also, there was an Amanda Abney b. 1812, daughter of William Abney Sr. b 1757 and Judith Clark. Amanda m. Andrew Ballenger and had Abney Ballenger 1832. Lots of connections between Abney and Ballengers here.
The only Daniel Abney I have b. 1821, son of Tucker Abney b. 1797 and Rachel Griggs, living in Estill Co KY.
Hopefully R. Robert Abney will have something on this for you.
Hope I've given you some leads. There may be more complete names for Jonathan and Ollie's sons, i.e. a first or middle name of Henry to go with the names listed above.