Celtic tribes arrived on the island between 600-150 B.C. Invasions by Norsemen that began in the late 8th century were finally ended when King Brian Boru defeated the Danes in 1014.

在公元前600年和公元前150年间，凯尔特人部落来到到岛上。 8 世纪末，古代北欧人开始侵犯，1014 年布莱恩（Boru）国王击败丹麦，结束了战争。

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