This is the wandering season for oakworms. They come down from the trees and look, sometimes at considerable distances from the trees, for places to pupate in the ground. My wife found one and later I found two more on the back porch. Here's the caterpillar.
The species designation is Anisota peigleri/senatoria because the two are essentially indistinguishable as caterpillars and as adults. A. senatoria is the widespread species. A. peigleri is found in the southern Appalachians. Here's the moth.