(?–1654), poet. Born probably near Cashel, Co. Tipperary, he was a protégé of the Butlers of Kilcash. He is said to have studied at the Dominican convents of Coleraine and Limerick. Around 1628 he went to St Anthony's College in Louvain. He returned to Ireland some time in the late 1630s and became Prior in Cashel. ‘Éirghe mo dhúithche le Dia’, written in 1641, is a piece of propaganda, calling for outright rebellion. When the Confederation of Kilkenny split in 1646 the Dominicans took sides against those seeking a compromise. Haicéad excoriated these ‘traitors’ in ‘Músgail do mhisneach, a Bhanbha’. His poetry of these years reflects his despairing and outraged state of mind, and complains of indifference towards him and his talents. He returned to Louvain. His tragic and isolated later years there were occupied in controversy over the rotation of the headship of his college. In spite of the combativeness of his professional life, he was humorous and amiable in his personal relationships, the Butler family having a particular place in his affections.
From The Concise Oxford Companion to Irish Literature in Oxford Reference.