Northern Ireland, formerly Scottish, I believe. Came to the New World in indentured servitude and basically escaped to become silly mountain people in the Appalachian Mountains. Someone hooked up with a Cherokee woman at one point or another, a lot of people got hanged, etc. etc. My great great (great?) grandfather came down from the mountains and became a farmer in north Alabama, where my family on my father's side still lives.
On my mother's side, there's also some French-African, her biological father came from Morocco, if I recall correctly.