The so-called American dollar princesses were wealthy American women of the late 19th and early 20th centuries who married into titled European families, exchanging wealth for prestige.
According to a book called Titled Americans (1915), there were 454 marriages between Gilded Age and Progressive Era American women and European aristocrats.[1] The Library of Congress claimed in a reference guide that "American heiresses married more than a third of the House of Lords".[1] The Spectator claims that among the marriages were 102 "British aristocrats", including "six dukes".[2]