The Buccaneers
Edith Wharton, Marion Mainwaring

Nan's new governess, Laura Testvalley, herself an outsider, takes pity on their plight and launches them instead on the unsuspecting British aristocracy. Lords, dukes, marquesses and MPs, it seems, not only appreciate beauty, but also the money that New York's nouveaux riches can supply.
A love story of love and marriage among the old and new moneyed classes, The Buccaneers is a delicately perceptive portrayal of a world on the brink of change.