Warren Buffett and President Barack Obama are related, according to genealogists at Ancestry.com. But you have to go back a few hundred years to make the connection. In a news release today, the company says its research shows President Obama and Buffett are "7th cousins three times removed." The common link: Mareen Duvall, a Frenchman who arrived in Maryland in the 1650s as an indentured servant and later became a successful, politically conservative land owner and merchant.