I sent a message to three of Mr. Threadgill’s children asking if they are related to Kenneth ~ I’ll let you know as soon as I hear from one of them.
Albie - Kenneth Threadgill sold his place in the mid 70’s (I think), since the place was so popular the new owner kept the name.
Heard back from one of Mr. Threadgill’s children, her response was, “of course, we are closely related, he’s dad’s cousin.”.