Henry Louis Gates has unearthed the family origins of many famous faces, from media legend Barbara Walters
, to domestic diva Martha Stewart
and even former Secretary of State Condoleezza Rice
. So it's only right that the Harvard professor invite singer and philanthropist John Legend
to dig into his family genealogy on the PBS series "Finding Your Roots With Henry Louis Gates Jr." The R&B crooner surely has family on his mind, as he prepares ...