I am a descendant of the James A. Holt line. His son, Lewis Austin, was my g-grandfather. He was born in 1897. I have a few photos from family reunions that I can scan and share if you are interested. I think they go back to James and his progeny. And I can provide information about Lewis Austin's progeny as well if you need it.
It is also possible that the spouse of Tirza Elinor Blithe, whom you list as H. Hendriks, may have actually spelled his name Hendrix. There are numerous Hendrixes in Anderson County. I actually have one in my past who married a Hackworth, on the Holt/Steele side of the family.
Just let me know if I can help.