In 1895, nine American girls, including a Vanderbilt (railroads), LaRoche (pharmaceuticals), Rogers (oil) and Whitney (New York trolleys), married peers of the British realm; among them, a duke, an earl, three barons and a knight. It was the peak year of a social phenomenon that began in the Gilded Age after the Civil War and handed down the legacy of Anglomania, Preppies, the Jet Set, even Winston Churchill and Princess Diana, offspring of such Anglo-American alliances. In all, more than 100 American heiresses invaded Britannia and swapped dollars for titles.