Comtesse de Monteil is a jewel thief, cat burglar, con-artist, and not even a real Comtesse. She's the woman who swindled the wealthy in France and looked damn good doing it.

Sources
https://www.atlasobscura.com/articles/burglar-countess-riviera-crime
https://trove.nla.gov.au/newspaper/article/151983328