1458 in Ireland

Incumbent

• Lord: Henry VI

Events

• Thomas Barrett appointed bishop of Annaghdown.
• Parliament of Ireland withdraws attaintment against John Cantwell II, Archbishop of Cashel, on grounds of ill-health.
• Rowland FitzEustace, 1st Baron Portlester marries Joan, widow of Christopher Lord Killeen
• Lord Delvin seizes land from his estranged son in law William Butler
• John Bole, Archbishop of Armagh hires Aodh son of Eoghan mac Néill Óg O'Neill as a protector

Deaths

• Edmund na Féasóige de Búrca, 4th Mac William Íochtar
• Calbhach Ó Conchobhair Failghe, chief of Uíbh Fhailghe