Captain Mirvan, Sir Clement, and Madame Duval all have extremely bad manners. They are all from slightly different stations in life: Madame Duval is lower-class but married into nobility, Sir Clement is a nobleman by birth, and Captain Mirvan is a naval officer. This supports Burney’s point that social status is not a marker for how polite or virtuous a person is, and that people from all walks of life can be inconsiderate, petty, and rude.