There are 2 titles associated with this person.

@book{ wphp_19829
  author={Sinclair,Hannah and More,Hannah},
  year={1819},
  title={A letter on the principles of the Christian faith. Written by Hannah Sinclair, eldest daughter of the Right Honourable Sir John Sinclair, Bart. Who died, May 22, 1818. Second American, from the second London Edition.},
  publisher={},
  address={Washington},    }
@book{ wphp_19828
  author={Sinclair,Hannah and More,Hannah},
  year={1819},
  title={A letter on the principles of the Christian faith: written by Hannah Sinclair, (Eldest Daughter of the Right Honourable Sir John Sinclair, Bart.) Who died May 22, 1818. First American, from the fourth Edinburg edition.},
  publisher={Franklin Press \& },
  address={Richmond},    }