Priscilla Chan is married to Mark Zuckerberg, the co-founder and CEO of Facebook. They wed on May 19, 2012, which happened to be the day after Facebook’s stock market launch. Chan is a pediatrician and philanthropist who is passionate about education, healthcare, and science. Chan is considered to have a strong influence on her hubby’s givings, as well. She began the Chan Zuckerberg Initiative to “advance human potential and promote equality.” Together they have pledged nearly $4.6 billion to charities, including a sizable donation of $75 million to San Francisco General Hospital, where Chan worked.