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Wiki information Arailt:
Maccus mac Arailt or Maccus Haraldsson was a Scandinavian or Norse-Gael king. He and his brother Gofraid were active in the lands around the Irish Sea in the 970s and 980s. Maccus's name is sometimes incorrectly given as Magnus; it is instead a name...
Ímar mac Arailt was an 11th-century King of Dublin. Ímar's reign spanned eight years, from 1038 to 1046, before he died in 1054.