Mark Zuckerberg, the 28-year-old founder of the social networking website Facebook, has married his girlfriend, Priscilla Chan. On Saturday, Zuckerberg married the 27-year-old Chan in the garden of his residence in Palo Alto, located in the US state of California. A spokesperson for Facebook described Chan's wedding ring as a "very simple ruby," which Zuckerberg designed. The couple, who had been in a relationship for more than nine years, first met at Harvard University. Harvard is where Facebook was launched by Zuckerberg in 2004. Zuckerberg and Chan subsequently relocated to California, where Facebook is currently based. Late last week, Facebook was valued at over US$100 billion in its initial public offering on the NASDAQ stock exchange.