Hello Richard, We have a connection with the Knox co. Ohio McKee. It is my understanding Robert McKee is a son of Alexander McKee and Tabitha Waddell. We have done some research in Cumberland/Franklin Co.'s in PA on Alexanders ancestors, but very hard to find proof in 1700's. Alexanders father may be (????) James McKee and nancy McGuire, but this is specualtion based on piecing together other researchers.
Have you been in contact with Mildred Day in Texas, Mildred is a direct descendant of Robert and Clarinda Mix. Milsred has alot of information on the families as they moved west.
Our connection is with a John McKee, son of a Cahrles Mckee and Sarah Hoagland. John Married our Sini Stillinger in Knox County. This Charles McKee a son of another Charles McKee, who is somehow connected with Robert McKee.