The lines "Hiram said to John" and "Billie Jean was alone for the second time" refer to Johnny Horton and Hank (Hiram) Williams, and their wife (first Hank's, then Johnny's). More here:
Yeah, I got that too. Billie Jean was a hot woman! I've got the Hank williams 10 disc box set and it tells some stuff about that in the book that it comes with (about Billie Jean/Hank and Billie Jean/Johnny).
another tidbit(he lost it after playing in the old Skyline) I think refers to hank williams. he was discoverd dead by his driver on a piece of road near Oakhill West virginia called Skyline drive. witch is about 20 miles from where i live. an autopsy was done in beckley. I've heard several local musicians tell the story.
Thanks - I had just assumed that the people he was referring to were hypothetical. I'm always amazed by FBs specificity. This makes me like the song a lot more.