ɪn nˈaɪntiːnhˈʌndɹɪd fˈɪfti sˈɪks, ʃiː bɪɡˈæn pˈʌblɪʃɪŋ hɜː dʒˈɑːn kˈɔfɪn sˈɪɹiz ʌv nˈɑːvəlz ˌʌndɚ hɜː mˈæɹid nˈeɪm, ɡwˈɛndəlˌiːn bˈʌtlɚ.
In 1956, she began publishing her John Coffin series of novels under her married name, Gwendoline Butler.