(from Broudin's Propugnaculum, p. 432)

MAURICE GIBBON, a native of Munster, and Archbishop of Cashel, a prelate endowed with every kind of virtue, was confined in prison for many years[2] in Cork because he refused to take the oath of Supremacy, and endured therein endless misery. 

He ended his life very holily there[3],on May 6th, 1578.

See also Sander, Bridgewater, Bozius, Rothe, Copinger, and Arsdeken.

[1] Or Fitzgibbon. He is also called Maurice Reagh. See his Life in Renehans Collections, i.241.
[2] In his letter to Pope Gregory XIII. He speaks of his creberrims vincula.’ Spic. Ossor., i.70
[3] Holing, however, says he died at Oporto. Ibid., p.83

Please pray for final perseverance for all of us!
May the martyrs of old inspire us all.