It's been a few years since this posting. I have a T.J.O. MORRISON son of Eva HELDERMAN and James MORRISON. Eva married Daniel SLINKARD after her marriage to James MORRISON. They are my husband's 3rd great grandparents. She married Miles DOYLE after the death of Daniel in 1838.
I haven't researched the MORRISON name, so I can't tell you if the two T.J.O MORRISONS are connected.