ɪɾ ɪz hˌæbɪtˈeɪʃənəl nˈeɪm fɹʌm ɐ lˈɔst hˈæmlɪt ɪn kˈʌmbɹiə, sˌoʊ nˈeɪmd fɹʌm ˈoʊld nˈɔːɹs ɪɹˈædælɚ "vˈæli ʌvðɪ ˈaɪɹɪʃ".
It is habitational name from a lost hamlet in Cumbria, so named from Old Norse Íradalr "valley of the Irish".