There are 3 titles associated with this person.

@book{ wphp_6408
  author={O'Brien,Mary},
  year={1785},
  title={The pious incendiaries: or, fanaticism display'd. A poem. By a lady.},
  publisher={},
  address={London},    }
@book{ wphp_6393
  author={O'Brien,Mary},
  year={1790},
  title={The fallen patriot. A comedy, in five acts. By Mrs. O'Brien.},
  publisher={},
  address={Dublin},    }
@book{ wphp_6392
  author={},
  year={1790},
  title={The political monitor; or Regent's friend. Being a collection of poems published in England during the agitation of the regency: consisting of curious, interesting, satyrical and political effusions of poetry. By Mrs. Mary O'Brien, Wife of Patrick O'Brien, Esq. and Author of Charles Henley, in 2 Vols.},
  publisher={},
  address={Dublin},    }