I recently matched with the DNA of a self-declared descendant of Delphia. I know myself to be a descendant of Elizabeth Eastridge, born c. 1794, probably in Hancock County in the Southwest Territory that later became Tennessee. Her mother was named Rebecca but her father is unknown. Based on this information I expect that the father was probably Nathan's brother. I doubt that Rebecca is the theorized first wife of Nathan, since she lived into the 1850s (I assume she was a widow by then). Anyone wanting to bounce theories off each other, please contact me.