There are 2 titles associated with this person.

@book{ wphp_24825
  author={Hawker,Robert},
  year={1794},
  title={Sermons on the Divinity and Operations of the Holy Ghost. By Robert Hawker, D. D. Vicar of the Parish of Charles, Plymouth; and Formerly of Macdalen-Hall, Oxford.},
  publisher={S. Hazard \& John Deighton [325 High Holborn] \& },
  address={Bath},    }
@book{ wphp_21342
  author={Hawker,Robert},
  year={1809},
  title={Zion's Pilgrim. By Robert Hawker, D.D. Vicar of Charles, Plymouth. First American Edition, Improved and Enlarged.},
  publisher={James Martin},
  address={Philadelphia},    }