the mountain of Breá
Faigheann na cnoic seo a n-ainm ón ainm dúiche Breá < Breagha < Brega. Scríobh an t-údar F.J. Byrne an cuntas seo a leanas faoi chúigí bunaidh na tíre: ‘The original Fifths were in all probability Ulaid, Laigin, Mumu, Connachta and Mide. The last-named possibly included Tara, although Mide proper (the name simply means ‘the middle’) comprised Westmeath, Longford and part of Offaly, whereas the modern county of Meath with the adjoining portions of Louth and north Dublin was known in the Old Irish period as Brega (‘the heights’).’—Irish Kings and High Kings. Féach, leis, an nóta faoi na barúntachtaí Déise Uachtarach, ~ Íochtarach