There are 4 titles associated with this person.

@book{ wphp_23055
  author={Wardlaw,Elizabeth},
  year={1724},
  title={Hardiknute. A fragment of an old heroick ballad.},
  publisher={},
  address={Edinburgh},    }
@book{ wphp_22894
  author={Wardlaw,Elizabeth},
  year={1740},
  title={Hardyknute: a fragment. Being the First Canto of an Epick Poem; with General remarks, and notes.},
  publisher={Robert Dodsley},
  address={London},    }
@book{ wphp_22895
  author={Wardlaw,Elizabeth},
  year={1748},
  title={Hardyknute, a fragment of an antient Scots poem.},
  publisher={Robert Foulis \& },
  address={Glasgow},    }
@book{ wphp_3188
  author={Wardlaw,Elizabeth},
  year={1783},
  title={Hardyknute. A Scottish fragment. See Percy's Antient ballads, vol. 2 p. 94. Edit. 2. N.B. Modern spelling is substituted for the ancient.},
  publisher={s.n. [sine nomine]},
  address={London},    }