William Jackson Griffith & Catherine Sigmon

We're now entering the somewhat murky waters of my family history.  The information you find below HAS NOT been completely sourced.  I'm posting it in hopes someone out there knows anything that may help.  Because of the prevalence of the name "William Griffith" and "William Jackson Griffith" (and it's variations) during this generation AND the previous generation, tracking has been very tedious, and at times, downright impossible.  It doesn't help that during this and the previous generation, migration to other states was HUGE.  I'll include what I have, what I know, what I speculate, and appreciate any corrections/errors or additional information that you'd like to point out and share.  This is where the "elusiveness" of my Griffith's begins.