ɪnðə θˈɜːtiːnθ ænd fˈoːɹtiːnθ sˈɛntʃɚɹiz, ðə mˈoːɹ ɛkstˈɛnsɪv tˈaɪɾəl ʌv dˈuːk ʌv slævˈoʊniə wʌz ɡɹˈæntᵻd, mˈeɪnli tə ɹˈɛlətˌɪvz ʌv hʌŋɡˈɛɹiən mˈɑːnɚkz ɔːɹ ˈʌðɚ mˈeɪdʒɚ nˈoʊbəlmˌɛn.
In the 13th and 14th centuries, the more extensive title of Duke of Slavonia was granted, mainly to relatives of Hungarian monarchs or other major noblemen.