Hi Kevin, My Knightons were from Alabama, too.What County in Alabama were your Knighton's in?Mine were mostly in Calhoun Co. (Oxford & Anniston) Ala area, but they did move around to various "other" counties and states.
As far back as my sis & I have managed to get is Spartanburg Co, SC where a Thomas Knighton showed up on the 1820 Census there.(He was the "ONLY") Knighton in Spartanburg Co, SC Census in 1820 Census. (It could have been the 1830 instead, as my mind is so full of my "other" lines right now, it's hard to keep them straight).
There were a family of Yarborough's living in Spartanburg Co, SC early on, from 1790+.There were Knighten/Knighton families in alot of Alabama counties by 1860.Please post what county in Ala. yours were from.