Who is Marshall Bruce Mathers III? Eminem, whose real name is Marshall Bruce Mathers III, is an American rapper, songwriter, and record producer. He was born on October 17, 1972, in St. Joseph, Missouri, but grew up in Detroit, Michigan. Eminem first gained mainstream popularity with the release of his major-label debut album, “The Slim … Continue reading School of Marshall Bruce Mathers III A.K.A Eminem