lˈɔːɹd ɹˈædnɚ mˈæɹid hˈɛlən mɐtˈɪldə tʃˈæplɪn, dˈɔːɾɚɹ ʌv ɹˈɛvɚɹˌɛnd hˈɛnɹi tʃˈæplɪn ænd sˈɪstɚɹ ʌv lˈɔːɹd tʃˈæplɪn, ˌɔn nˈaɪntiːn dʒˈuːn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti sˈɪks.
Lord Radnor married Helen Matilda Chaplin, daughter of Reverend Henry Chaplin and sister of Lord Chaplin, on 19 June 1866.