ðə fˈoːɹθ dˈɪstɹɪkt wʌz ɪŋkˈoːɹpɚɹˌeɪɾᵻd ˌɪntʊ nˈuː ˈɔːɹliənz ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd fˈɪfti tˈuː; pɹˈaɪɚ tə ðˈɛn ɪt wʌz lˌæfeɪˈɛt sˈɪɾi, dʒˈɛfɚsən pˈæɹɪʃ, ænd bˈuːlɪɡniz ˈoʊldɚ bɹˈʌðɚ, fɹˈænsɪs, hæd sˈɜːvd æz ɪts mˈeɪɚ.
The Fourth District was incorporated into New Orleans in 1852; prior to then it was Lafayette City, Jefferson Parish, and Bouligny's older brother, Francis, had served as its mayor.