1451 in Ireland
Events from the year 1451 in Ireland.
Incumbent
Events
- Rathmacknee Castle believed to have been built by John Rosseter, 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.