Many of the current crop of billionaires owe their fortune to the internet, but perhaps none more so than Larry Page. We all use his invention every day - he created Google. Even back in 2007, when Lucinda Southworth married him, he was already financially set for life.
Southworth is a clever and capable woman - she has a Ph.D. from Stamford in Biomedical Informatics. Her interests these days appear to be more charitable, though; she runs the Carl Victor Page Memorial Foundation.