William Franklin Guest was an American R&B/soul singer best known as a member of Gladys Knight & the Pips along with his cousins Gladys Knight, Merald "Bubba" Knight and Edward Patten. Guest was a member of the group for its entire history, from 1952 to 1989. He is a multiple Grammy Award winner and was inducted to the Rock and Roll Hall of Fame with Gladys Knight & the Pips in 1996.