ɪt tˈeɪks ɪts nˈeɪm fɹʌm wˈɪljəm ðə lˈaɪənz kˈæsəl ʌv ɪɹˈɛn ˈoʊld ɪɹˈɛn, bˈɪlt ðɛɹ ɪnðə twˈɛlfθ sˈɛntʃɚɹi.
It takes its name from William the Lion's castle of Eren (Old Eren), built there in the 12th century.