dˈuːk ˈɛɹɪk, æz ɐ lˈiːdɚɹ ʌv mˈɛn ænd pˌɑːlɪtˈɪʃən pˈɑːsᵻbli bˈɛɾɚ kˈɪŋ mətˈɪɹiəl ðɐn bˈɜːdʒɚ, tɹˈaɪd tʊ ɪstˈæblɪʃ ɐn ˌɪndᵻpˈɛndənt kˈɪŋdəm ɚɹˈaʊnd bˈoʊhəslˌɛn, wˌɪtʃ hiː hæd ɹᵻsˈiːvd æz pˈɑːɹt ʌv hɪz mˈæɹɪdʒ tə ðə pɹˈɪnsɛs ɪndʒˈɛboːɹɡ ʌv nˈoːɹweɪ, ænd hˈælənd æt ðə bˈaʊndɚɹi bᵻtwˌiːn swˈiːdən, nˈoːɹweɪ, ænd dˈɛnmɑːɹk.
Duke Eric, as a leader of men and politician possibly better king material than Birger, tried to establish an independent kingdom around Bohuslän, which he had received as part of his marriage to the princess Ingeborg of Norway, and Halland at the boundary between Sweden, Norway, and Denmark.