Events from the year 1534 in Ireland.
- February – Gerald FitzGerald, 9th Earl of Kildare, is summoned to London, and appoints Thomas FitzGerald, 10th Earl of Kildare deputy governor of Ireland in his absence.
- June – Thomas FitzGerald, 10th Earl of Kildare (Silken Thomas) revolts. He had heard rumours that his father had been executed in the Tower of London and, as a result, publicly renounces his allegiance to King Henry VIII.
- July 28 – Archbishop John Alen, Chancellor of Ireland (who has attempted to mediate in the revolt) is murdered at Clontarf by retainers of Thomas FitzGerald.
- September 2 – Gerald FitzGerald, 9th Earl of Kildare, Thomas' father, dies in the Tower of London.
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