There are 3 titles associated with this firm.

@book{ wphp_8743
  author={de St. Venant,Catherine-Françoise-Adélaide},
  year={1807},
  title={Leopold de Circe; or, The Effects of Atheism. By M. de St. Venant, Member of The National Institute. Translated by J. S. Byerley, Esq.},
  publisher={Clement Chapple [66 Pall Mall] \& },
  address={London},    }
@book{ wphp_8943
  author={S—,Mrs},
  year={1811},
  title={Gotha: or, Memoirs of the Wurtzburg Family. Founded on Facts. In Two Volumes. By Mrs. S—.},
  publisher={Clement Chapple [66 Pall Mall] \& },
  address={London},    }
@book{ wphp_12256
  author={Barrell,Miss P.},
  year={1811},
  title={The Test of Virtue, and Other Poems. By the late Miss P. Barrell, Author of Riches and Poverty, a Tale.},
  publisher={Thomas Boosey \& Clement Chapple [66 Pall Mall] \& },
  address={London},    }