hiː lˈɛd ɐ lˈɑːɹdʒ flˈiːt ɐɡˈɛnst ɪn ˈeɪthˈʌndɹɪd θˈɜːɾi nˈaɪn tə pˈʌnɪʃ ðə nˈæɹəntˌaɪnz ˈɔːlsoʊ kˈɔːld nəɹˈɛtviənz fɔːɹ ɹˈeɪdɪŋ ænd slˈɔːɾɚɹɪŋ sˈɛvɹəl vᵻnˈiːʃən tɹˈeɪdɚz ɹᵻtˈɜːnɪŋ fɹʌm bˌɛnɪvˈɛntoʊ ɪn ˈeɪthˈʌndɹɪd θˈɜːɾi fˈoːɹ ˈeɪthˈʌndɹɪd θˈɜːɾi fˈaɪv.
He led a large fleet against in 839 to punish the Narentines (also called Neretvians) for raiding and slaughtering several Venetian traders returning from Benevento in 834–835.