There are 2 titles associated with this person.

@book{ wphp_5736
  author={Nicholson,Margaret},
  year={1786},
  title={Authentic memoirs of the life of Margaret Nicholson, who attempted to stab His Most Gracious Majesty with a knife, ... on Wednesday, Aug. 2, 1786; ...},
  publisher={James Ridgeway},
  address={London},    }
@book{ wphp_5705
  author={Nicholson,Margaret},
  year={1786},
  title={High treason - committed by Margaret Nicholson. Guilty of the horrid crime of endeavouring to murder his sacred Majesty King George III. on the 2d of August 1786, ... This knife, or poinard, will be kept for a remembrancer of this horrid act.},
  publisher={s.n. [sine nomine]},
  address={London},    }