A Zuckerberg Family Album

Born in 1984, Facebook founder Mark Zuckerberg grew up in Dobbs Ferry, New York, the son of a dentist and a psychiatrist who left her profession to work in her husband's office.

Zuckerberg's father describes his son, seen here at five years old, as "strong-willed and relentless."

Facebook was founded while Zuckerberg was a student at Harvard, where this photograph was taken.

Zuckerberg, right, sits with Facebook's other founders. The tale of the company's earliest days inspired the film The Social Network, which draws a rich, dramatic portrait of a furious, socially handicapped genius, a character who bears little resemblance to the actual Mark Zuckerberg.

In this 2006 photo, the Facebook founder poses with his older sister Randi, the company's head of consumer marketing and social-good initiatives.

Zuckerberg and his family visit the Wizarding World of Harry Potter in Orlando for Thanksgiving 2010.