The political influence of the O'Donovans with the Ui Chairbre decreased as the Mac Carthy influence increased, and then splintered. By 1232, certain septs of the MacCarthys ruled from where they had relocated to the south of the historical territory of the Ui Fidghente, and controlled the Ui Chairbre. In 1260 the O'Donovans are found raiding Norman lands alongside none other than Fíngin Reanna Róin Mac Carthaig, according to Norman documents. This was one year before his famous victory at the Battle of Callann, where the O'Donovans of Ui Chairbre are also believed to have been at his side. In 1259 he aided them in a fight against the O'Mahonys, who appear to have been blamed for the slaying of Crom Ua Donnubáin.