1) The heroine wears spectacles.
2) I'm a Bad Author who knowingly includes historical anachronisms in her novel: there will be wild boars. And wild boars, alas, became extinct in Great Britain during the Middle Ages. But since I like wild boars, wild boars you are going to encounter.
3) And you're going to encounter them already in the first chapter (yes, I know, shocking), which starts like this:
(Which is a parody of the beginning of Thackeray's Vanity Fair.)Chapter 1in which our story opens with wild boars,highwaymen, an an early-morning strollup St. James's Street
When the century was still in its teens, and on one surprisingly sunshiny day in April, there drove up to the rusty gate of Miss Pinkerton's Academy for Young Ladies, on Chiswick Lane, a large battered coach, with two fat horses and a fat coachman, his face mottled with hectic red. A scrawny youth, who sat on the box beside the rotund coachman, bit his nails, tugged at his sweaty hair, and scrambled down the box as soon as the coach drew up opposite of Miss Pinkerton's spotted brass plate. St. Cuthbert's Academy for Young Ladies, it read with old-fashioned, un-neoclassical flourish. One corner was dented and below the letters somebody had scratched a leering face. It might have been the face of a gargoyle, or perhaps the scratcher had simply not been used to working with brass.