 Some of the hymns are found in the Antiphonary of Bangor, the "Leabhar Breac", and the Book of Cerne.There are two manuscripts of this collection, not agreeing exactly, one in Trinity College, Dublin, of the 11th century, and one in the Franciscan Convent at Dublin, of somewhat later date.In the "Liber Hymnorum" there are hymns by Patrick, Columba, Gildas, Sechnall, Ultan, Cummaim of Clonfert, Muging, Coleman mac Ui Clussaigh, Colman Mac Murchan, Cuchuimne, Óengus of Tallaght, Fiacc, Broccan, Sanctam, Scandalan Mor, Mael-Isu ua Brolchain, and Ninine, besides a few by non-Irish poets.