There are 4 titles associated with this firm.

@book{ wphp_9093
  author={Ker,Anne},
  year={1817},
  title={Edric, The Forester: or, The Mysteries of the Haunted Chamber. An Historical Romance, in three volumes. By Mrs. Anne Ker, of His Grace the Duke of Roxburgh's Family, author of The Heiress di Montalde—Adeline St. Julian—Emmeline, or The Happy Discovery—Mysterious Count—and Modern Faults.},
  publisher={},
  address={London},    }
@book{ wphp_11044
  author={More,Hannah},
  year={1819},
  title={Percy. A Tragedy, in Five Acts},
  publisher={John Cumming \& T. Hughes [Ludgate St] \& John Sutherland [9 Calton Street] \& David Sampson Maurice \& John Bysh},
  address={London},    }
@book{ wphp_10437
  author={Williams,Helen Maria and Wilkinson,Sarah Scudgell},
  year={1820},
  title={Popular stories, or, Entertaining tales &c. &c. Each volume embellished with six engravings.},
  publisher={T. Hughes [Ludgate St]},
  address={London},    }
@book{ wphp_8705
  author={Owenson,Sydney},
  year={1823},
  title={The Novice of Saint Dominick. By Miss Owenson, now Lady Morgan, Author of St. Clair, &c. In four volumes. Fourth edition.},
  publisher={T. Hughes [Ludgate St] \& },
  address={London},    }