Mary Campion was a British dancer, born in 1687, who died in 1706.
Biography
Mary Campion or Mary Anne Campion (1687 – 19 May 1706) was a successful English singer and dancer whilst still a child. She gave this up to be the mistress of the elderly William Cavendish, 1st Duke of Devonshire. After she died in 1706 the Duke paid for an extravagant tomb but did not attend the funeral.
From the Wikipedia article “Mary Campion”, licensed under CC BY-SA 4.0.
Facts from Wikidata (Q18783847), CC0.