The Honourable Miss Carteret is a character in Persuasion. She is the daughter of the Dowager Viscountess Dalrymple, and the late viscount. She and her mother came to Bath for a time, creating quite an excitement as they are nobility. Sir Walter Elliot is a distant cousin of her mother's.
Miss Carteret and her mother provided disappointment to Anne Elliot, who thought that elegance of manner would be the only thing to save them from the annoyance they caused her in their arrival. Indeed, Miss Carteret was so plain and so awkward, that the only reason she was tolerated in Bath society was because of her noble birth.