There are 3 titles associated with this person.

@book{ wphp_8781
  author={Layton,Jemima and Savile de Starck,Henry},
  year={1808},
  title={Bertrand; or, Memoirs of a Northumbrian Nobleman in the Seventeenth Century; Written by Himself. In Three Volumes.},
  publisher={Minerva Press, Lane, Newman, and Co.},
  address={London},    }
@book{ wphp_9074
  author={Layton,Jemima},
  year={1816},
  title={Spanish Tales, Translated From Le Sage, and Selected From Other Authors: Wherein are contained a description of Madrid, Grenada, Saragoza, Seville, Milan, Parma, Palermo, &c. &c. By Mrs. Frederick Layton. In Three Volumes.},
  publisher={John Hatchard [190 Piccadilly] \& Barrett \& John Deighton [Cambridge, 1784–1786; 1796–?]},
  address={London},    }
@book{ wphp_9179
  author={Layton,Jemima},
  year={1820},
  title={Hulne Abbey, A Novel, in three volumes. By Mrs. Frederick Layton, formerly Miss Jemima Plumptre. Dedicated by permission to the Duke of Northumberland.},
  publisher={William Fearman \& },
  address={London},    }