Walt Disney's The Happiest Millionaire follows the turn-of-the-century family of Nicholas's brother, Philadelphian millionaire Anthony J. Drexel Biddle

(1896-1961), the patriarch of the Biddle family, proprietor of the Biddle Boxing and Bible School, and an enthusiastic alligator owner who takes an immediate shine to new butler John Lawless, fresh from Ireland. Anthony’s daughter Cordelia, or “Cordy,” is coming of age and having a difficult time relating to men of her age due to her homeschooling and tomboyishness, epitomized by her proficiency in a typically masculine recreational activity (boxing). She convinces her father to send her to a boarding school for young women, so she can learn more about feminine activities of the era. At a party held by her Aunt Gladys for young women and men of their same social strata, she meets Angie Duke, a young man who is heir to his family’s business but would rather design automobiles. The two families clash, the Biddles representing Philadelphia’s traditional upper class, while the Dukes are “nouveau riche.”