Philanthropist and pediatrician Priscilla Chan is married to Mark Zuckerberg of Facebook fame. They tied the knot in 2012 and have two kids together. She went to Harvard University and the University of California. The couple founded the Chan Zuckerberg Initiative and have pledged over $4 billion in charity. She recently donated to her old workplace, San Francisco General, and the Silicon Valley Community Foundation. They have 18 million Facebook shares, which are worth over $900 million.