Events from the year 1451 in Ireland.
Incumbent Lord: Henry VI"Henry VI, king of England". Encyclopædia Britannica. 28 July 1999.
Events Rathmacknee Castle believed to have been built by John Rosseter (Rossiter, Rositer, Rosceter), seneschal of the Liberty of Wexford.
Deaths Murcadh Ó Madadhan, Chief of Síol Anmchadha. Margaret O'Connor, better known by her maiden name Margaret O'Carroll.
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