aithearrach Definitions (by source) Show all Aithdioghluim Dána: A Miscellany of Irish Bardic Poetry, Historical and Religious, including the Historical Poems of the Duanaire in the Yellow Book of Lecan. Vol II, Translations, Notes, Vocabulary vid. aithrighim Aithdioghluim Dána: A Miscellany of Irish Bardic Poetry, Historical and Religious, including the Historical Poems of the Duanaire in the Yellow Book of Lecan. Vol II, Translations, Notes, Vocabulary. Editor: Lambert McKenna S.J. Leabhar Branach: The Book of the O'Byrnes repetition. gur aithruigh a. nóis, 2690 n. Leabhar Branach: The Book of the O'Byrnes. Editor: Seán Mac Airt.