There are a million different southern accents. Not all sound like Georgia or Virginia. There are a lot of people in Southern Iowa with a a southern accent. It's pretty strong with my dad's side of the family. But then, they migrated to southern iowa from Eastern Tennessee in the 1850's. A lot of Southern Iowa was settled by people from Tennesse, Kentucky and Virginia in the mid 1800's. It's stronger with some than others, but I've heard plenty of older people (60's/ 70's) talk like Derek from New Sharon.