There are 2 titles associated with this firm.

@book{ wphp_12852
  author={B.,F. H. and Leftley,Charles and Linley,William},
  year={1819},
  title={An Address to the Right Hon. Lord Byron: With an Opinion on some of his Writings. By FHB. Sonnets and Odes, Elegies, Ballads, and Sketches, on Various Subjects, Chiefly Descriptive. By William Linley, Esq. Late in the Civil Service of the East India Company; And the Late Mr. Charles Leftley, Parliamentary Reporter of the Times Newspaper; Both Educated at St. Paul's School.},
  publisher={Wetton and Jarvis [Paternoster Row] \& },
  address={London},    }
@book{ wphp_9425
  author={Stoddart,Lady Isabella Wellwood},
  year={1823},
  title={The Scottish Orphans: A Moral Tale. Founded on an Historical Fact; and Calculated to Improve the Minds of Young People. By Mrs. Blackford, author of The Eskdale Herd-Boy, 'A Very Superior Work; and We Have Read It Ourselves with Much Interest.'—London Magazine.},
  publisher={W. Wetton [Paternoster Row] \& },
  address={London},    }