 "ashling"] poems, in which the vision of a beautiful woman comes to the poet in his sleep—the woman also often symbolizing the tragic Ireland of his time.Most of the following information comes from Corkery's work.Corkery in his turn depended on a book in the Irish language, "Amhráin Eoghain Ruaidh Uí Shúilleabháin", or "Songs of Eoghan Rua Ó Súilleabháin", written by the priest An t-Athair Pádraig Ua Duinnín (Father Dinneen).