Josephine Myrtle Corbin was born in Lincoln County, Tennessee in 1868. She was born a dipygus, meaning that she had two separate pelvises side by side from the waist down. The extra legs were part of a twin that did not split correctly, like Frank Lentini with his third leg. Each of her smaller inner legs was paired with one of her outer legs. She was said to be able to move her inner legs, but they were too weak for walking. She had four daughters and a son.