Cantwel, John an Irish archbishop, was born in the County of Tipperary. Having completed his studies at Oxford, he was made bachelor of laws, and promoted to the metropolitan see of Cashel, Oct. 27, 1452, where he distinguished himself by his purity of conduct and by his zeal in ecclesiastical discipline. He held several synods, among them those of Limerick, in 1453, and Fethard, in July, 1480. Before his death, which occurred in 1482, he made a charitable distribution of all his goods. See Hoefer, Nouv. Biog. Generale, s.v.