There are 2 titles associated with this person.

@book{ wphp_6413
  author={Barker,Mary},
  year={1798},
  title={A welsh story. In three volumes.},
  publisher={Thomas Hookham and James Carpenter [Old Bond Street]},
  address={London},    }
@book{ wphp_12140
  author={Barker,Mary},
  year={1815},
  title={Lines Addressed to a Noble Lord; (His Lordship will know why,) By One of the Small Fry of the Lakes.},
  publisher={},
  address={London},    }