bɹˈoʊdɹɪk wʌz bˈɔːɹn ɪn tʃˈɑːɹlztaʊn, nˈuː hˈæmpʃɚ, ðə sˈʌn ʌv mˈɛɹi ᵻlˈɪzəbəθ nˈeɪ mˈɑːɹtɪndˌeɪl wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd nˈaɪnti sˈɪks nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi sˈɪks ænd dʒˈeɪmz dʒˈoʊsəf bɹˈoʊdɹɪk ɹˌoʊmən tˈuː ɔːɹ dʒˌeɪˈɑːɹ.wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd nˈaɪnti fˈaɪv nˈaɪntiːnhˈʌndɹɪd fˈɪfti nˈaɪn.
Broderick was born in Charlestown, New Hampshire, the son of Mary Elizabeth (née Martindale) (1896–1986) and James Joseph Broderick II (or Jr.) (1895–1959).