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Son of Muirchertach mac Muiredaig - King of Ailech and Duinfeach Teangumha Brother of Báetán mac Muirchertaig, Ard-rí na h'Éireann; Domnall Ilchelgach mac Muirchertaig, Ard-rí na h'Éireann and Neiline mac Muiredaig Ó Néill