I'm glad you answered so promptly - I need to make a correction: Elizabeth/Mary Elizabeth and Rosannah CONN weren't daughters of John b. abt 1810, oldest son of Jesse Wilson CONN. Their father was James CONN, b. abt 1814, the second-oldest.
In the 1850 Morgan Co. KY census, James R. BARNETT, 21, is in the household of John H. RAMSEY, 31, and his family at house #598. Also in the household is John CON, 16. Jesse CON is at #582 and his son John is at #583, with a son John aged 16. At #584 is Milton CARTER, 45, but no daughter named Elvira.
Either John CONN of John was counted twice, or the John living with RAMSEY is the son of James of Jesse. I haven't checked that census for CARTERs, but I'll bet Elvira is not far away.
Do you know what the relationship is between Bethany RAMSEY and John RAMSEY who married Louisa BARNETT?