There is a lot of Irish and Scots language that makes up the Southern hillbilly dialect. My ancestors landed in the mountains of North Carolina and gradually drifted into Tennessee. We always stayed close to the mountains though.
My grandparents used a lot of funny words that never made a lot of sense to me until I got older and figured out they were a blend of Scots, Irish, and English.
Some of that Scots-Irish "English" made it down to me via my dad and my maternal grandfather. Now that we live close enough to the old stomping grounds I use my grandfather's versions of local place names which is apparently a "back country" remnant of the "old" talk.