The information I have shows 6 children for James Buckley and Mary or Margaret Lynch. The youngest is James born 1848 in Bay du Vin. There is nothing on his marriage but he may be your man.
I note though that James & Abegail's son John also had a James born 1824 and another son, both of whom may have had sons named James. Likewise, James & Abegail's son William had a James born 1825 and other sons. Do you want me to send you the information I have?