 Muircertach mac Thomas Ó Floinn the heir aspirant was slain "treacherously" by Hugh, grandson of Aodh Buidhe Ó Néill (progenitor of the Clandeboye O'Neills), and when his father Thomas died the realm passed into the hands of the Clandeboye O'Neills.The Fir Luirg, or "men of Lurg", are listed as being among the "Síl Colla Uais".By the 14th century, they were subjugated by the Maguires.