Step 1 : Introduction to the question "What doll, created in 1959, was named after the inventor's daughter?"
The Barbie doll was invented by Ruth Handler in 1959, and was named after her own daughter. The Ken Doll, likewise, was named after her son. Barbie's full name is Barbara Millicent Roberts. The doll made its debut at the American International Toy Fair in New York on March 9, 1959. This date is also used as Barbie's official birthday. Mattel has sold over a billion Barbie dolls, making it the company's largest and most profitable line. Barbie has expanded into a media franchise, including animated films, television specials, video games, and music.