Have an update to my original post. Shame on me for assumptions about the heirs of Dolphin. I have found a typed copy of the original deed where Edmond Cooper purchased the land. The purchase was in 1854, from "Mistress Eveleena(sic)Harris, wife of Moses Harris, and Mary M. Harris, wife of Andrew Cooper." Looking at Andrew Cooper and Mary's children, the first son was Joseph B. Cooper. Knowing Andrew's father was Joseph Cooper, the B. probably coincides with Dolphin B., but no way to know yet. Hope this catches someone's eye. Also, Moses having the son Dolphin is not an indication of his father, but of his father-in-law.