Question: Which long-time mistress of King Charles II of England occupied a townhouse in Pall Mall, London?
Sentence (from "Nell Gwyn"): Eleanor "Nell" Gwyn (2 February 1650 – 14 November 1687; also spelled "Gwynn", "Gwynne") was a long-time mistress of King Charles II of England and Scotland.
Relevant evidence: Yes