There are 4 titles associated with this person.

@book{ wphp_8060
  author={de Graffigny,Françoise},
  year={1774},
  title={The Peruvian Letters, translated from the French with an additional original volume. By R. Roberts, translator of select tales from Marmontel, Author of Sermons by a lady and translator of the History of France, from the Abbé Millot.},
  publisher={Thomas Cadell [London]},
  address={London},    }
@book{ wphp_5037
  author={Leprince de Beaumont,Jeanne-Marie},
  year={1775},
  title={The triumph of truth; or, Memoirs of Mr. De La Villette. Translated from the French By R. Roberts. In two volumes.},
  publisher={Thomas Armitage [College Green]},
  address={Dublin},    }
@book{ wphp_5005
  author={Leprince de Beaumont,Jeanne-Marie},
  year={1775},
  title={The triumph of truth; or, memoirs of Mr. De La Villette. Translated from the French by R. Roberts. In two volumes. ...},
  publisher={Thomas Cadell [London]},
  address={London},    }
@book{ wphp_12308
  author={Roberts,Rose},
  year={1783},
  title={Albert, Edward and Laura, and the Hermit of Priestland; Three Legendary Tales. By R. Roberts.},
  publisher={Thomas Cadell [London]},
  address={London},    }