← 1244 1243 1242 1241 1240 1245 in Ireland → 1246 1247 1248 1249 1250
Centuries:	11th 12th 13th 14th 15th
Decades:	1220s 1230s 1240s 1250s 1260s
See also:	Other events of 1245 List of years in Ireland

Events from the year 1245 in Ireland.

Leadership

• Lord: Henry III^[1]

Events

• An earthquake destroys the Cathedral of Down which was established by John de Courcy with generous endowments to the Benedictines from Chester in England in 1183.^{[citation needed]}
• William Welwood becomes Lord Chancellor of Ireland.^[2]
• Maurice Fitzgerald, the Lord Chief Justice of Ireland, is generally credited with the establishment of the medieval European-style town and port of Sligo, building Sligo Castle in 1245.^{[citation needed]}