Mark Elliot Zuckerberg
May 14 , 1984 (age 31) *bday*
Programmer & businessman who co-founded Facebook, a social networking website, at age 20 & took it public in 2012
He was a member of his high school fencing team & attended Harvard University
He became the world’s youngest billionaire in 2004. In 2013 he was worth over $13 billion
He married his longtime girlfriend Priscilla Chan in 2012
