London loves its eccentrics. We carve them into blue plaques, mutter their names in pub stories, and stitch them into the long, messy quilt of the city’s history. Some are kings and reformers; others are bawds and tricksters. Among the latter, few shine brighter—or stranger—than Priss (or Priscilla) Fotheringham, the Restoration sex worker whose “chucking” act…