The only Younger that I'm realted to from Kentucky, (that I know of that is), would be Angeline Henderson. The other Youngers that I'm related to all hail from Missouri.
You are correct about Henry Jackson Younger being born in Orange County, NC though, yet I've never found any link between he and the Younger gang.
Here is the information that I have on the Youngers.
Henry Jackson Younger
b. July 26, 1820, Orange County, KY
d. December 2, 1896, Elmo, Nodaway County, MO
Angeline Henderson (Henry Jackson's wife)
b. 1828, Logan County, KY
d. July 6, 1892, Nodaway, MO
They had ten children, their oldest was my g-great grandfather.
Robert James Younger
b. October 10, 1848, Clinton County, MO
d. January 4, 1917, Marion, Buchanan County, MO
Susan Adeline Vassar (Robert James' wife)
b. March 10, 1856, Easton, Buchanan, MO
d. March 4, 1925, Easton, Buchanan, MO
Robert and Susan married in 1874.
They had four children, including my great-grandfather.
Earl Ahighs Younger
b. June 20, 1888, Easton, Buchanan, MO
d. December 21, 1961, Columbia, Boone County, MO
Julia Chafin (Earl's wife)
b. May 5, 1885, Platte, MO
d. May 25 1947, St. Joseph, Buchanan, MO
Earl and Julia married March 7, 1907 in St. Joseph, Buchanan, MO.
I have some info on the siblings of Robert James and Earl Ahighs. If you need more information and I have it, I will share it with you.
Also, I have death certificates for Robert James Younger, Susan Adeline Younger (Vassar), Earl Ahighs Younger, and Julia Younger (Chafin).
For Henry Jackson Younger, I have an 1850 census that lists he, Angeline, and their first two children: Robert James and William H.H. I also have a Civil War draft record that lists Henry Jackson.
If you would like any or all of these records, feel free to send me and e-mail and tell me which ones you are interested in: email@example.com