While they’re now separated, it’s worthy to note that Sergey Brin, another cofounder of Google, certainly added his fair share to their overall net worth; but so did Anne Wojcicki, who co-founded 23andMe — a personal genomics company that helps trace anyone’s genealogical tree.

Photo by Steve Jennings/Getty Images for MerchantCantos

Wojcicki has done plenty both creatively and professionally, with a net worth of just under $700 million. So both entrepreneurs have done plenty, but why did they split up? While the answer to this is relatively unknown, it didn’t seem to affect Brin, nor Google, as the company is doing just fine; and Brin married soon afterward.