Lady Wainfleet

Louisa, Lady Wainfleet, is a cousin of Robert Beaumaris and the wife of Lord Wainfleet. She attends the evening party at Lady Bridlington's for Arabella Tallant at Beaumaris's request, and she notes how Beaumaris pays court to Arabella, which she thinks is "too bad" because Arabella is so young and naive. She later attends the ball Lady Bridlington gives and walks about with Beaumaris, speaking with acquaintances.

It is unknown whether Lord Wainfleet is a marquess, earl, viscount, or baron. Likewise it is not said in the text how Louisa Wainfleet is related to Robert Beaumaris.