Cool, a Duckle. As you probably noticed the Dunkle, Henry and Fitzgerald families live in the same areas and appear in the census in the same groups. They probably attended the same churches. It usually goes together. My John Fitzgerald married Susanna Dunkle and so if his sisters married Susanna's brother (s) would not be unusal in the early 1800's. John had 2 brothers who's children married into the Henrys. John's first marriage ended and I have no idea how or why, but he then married Mary Beer (s) and had children with her. Do you belong to the Duckle site?