Ailech
Royal seat of the Cenél nÉogain. According to Brian Lacey, Ailech originally referred to a fortification in the area now covered by the townlands of Elaghmore (Ailech Mór, Co. Derry) and Elaghbeg (Ailech Becc, Co. Donegal) on either side of the Northern Irish border; then, after c.789, when the Cenél nÉogain led by Áed Oirdnide overtook territory from the Cenél Conaill and gained control of the overkingdom of the northern Uí Néill, its kings relocated to the ringfort now known as the Grianán of Ailech so that Ailech came to refer to the new royal seat instead.
Sources
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