There are 7 titles associated with this person.

@book{ wphp_2455
  author={Dacre,Charlotte and King Fortnum,Sophia},
  year={1798},
  title={Trifles of Helicon. By Charlotte and Sophia King.},
  publisher={James Ridgway [York Street]},
  address={London},    }
@book{ wphp_7612
  author={King Fortnum,Sophia},
  year={1798},
  title={Waldorf; or, the Dangers of Philosophy. A philosophical tale. By Sophia King, author of ``the Trifles from Helicon.'' ...},
  publisher={George, George, and John Robinson},
  address={London},    }
@book{ wphp_7593
  author={King Fortnum,Sophia},
  year={1799},
  title={Cordelia, or a romance of real life. In two volumes. By Sophia King, author of Trifles from Helicon; & Waldorf, or Dangers of Philosophy.},
  publisher={Minerva Press, William Lane},
  address={London},    }
@book{ wphp_778
  author={King Fortnum,Sophia},
  year={1801},
  title={The Fatal Secret; or, Unknown Warrior. A Romance of the Twelfth Century, with Legendary Poems. By Sophia King, Author of Waldorf, or the Dangers of Philosophy; Cordelia, a Romance of Real Life; and the Victim of Friendship, a German Romance.},
  publisher={},
  address={London},    }
@book{ wphp_8529
  author={King Fortnum,Sophia},
  year={1801},
  title={The Victim of Friendship; a German Romance. By Sophia King, Author of Trifles from Helicon; Waldorf, or the Dangers of Philosophy; and Cordelia, a Romance of Real Life.},
  publisher={Robert Dutton [Birchin Lane]},
  address={London},    }
@book{ wphp_611
  author={King Fortnum,Sophia},
  year={1804},
  title={Poems, Legendary, Pathetic, and Descriptive. By Mrs. Fortnum (late Sophia King).},
  publisher={},
  address={London},    }
@book{ wphp_277
  author={King Fortnum,Sophia},
  year={1805},
  title={The Adventures of Victor Allen. By Mrs. Fortnum, (Late Sophia King,), Author of Waldorf, or the Dangers of Philosophy; Cordelia, A Romance of Real Life; The Victim of Friendship, A German Romance; The Fatal Secret, or Unknown Warrior; &c. In Two Volumes.},
  publisher={W. Hodgson \& },
  address={London},    }