As a result , eight individuals were sent to trial , including Jane Southworth , Jennet Bierley , and Ellen Bierley . They were said to have used witchcraft on Grace Sowerbutts , Jennet 's grand-daughter and Ellen 's niece . As a result , eight individuals were committed to Lancaster Assizes , three of whom - Jane Southworth , Jennet Bierley , and Ellen Bierley - were accused of practising witchcraft on Grace Sowerbutts , Jennet 's grand-daughter and Ellen 's niece .