However the following year Toirdhealbhach was decisively defeated by O Conchobair and his vassals at Feara Ceall in the Sliabh Bloom; O Brian had been en route to Meath to fight O Ruairc but had been intercepted by O Conchobair. O Brian was forced to return home, ""without prey, without hostage, without peace, without truce."" This brought O Brian and O Conchobhair into open war; O Brian struck within the same year with "an army into Connacht; and they carried off Ua Ceallaigh, i.e. Tadhg, son of Conchobhar, lord of Ui-Maine, and slew Ruaidhri Ua Flaithbheartaigh". The death of Ua Flaithbheartaigh indicates that an attempt may have been made on Gallimhe, but O Brian would have to wait a full four years before he reached this objective.