I'm puzzled, despite forty years and more of research into the popular printing of songs in Ireland, using libraries and private collections in Ireland, Britain, US and Australia, I have never come across any ballad sheets with the imprint 'Dublin Publishing House'. Nor does DR Charles Benson's Index to the Dublin Print Trade 1800 - 1850 list any house of that name. Does the above message refer to an Irish publisher at all? Where was it located?