Are the Sweeten children from Everybody Loves Raymond related to little girl on Full House?

No, the Sweeten children from Everybody Loves Raymond are not related to the little girl on Full House. The Sweeten children, Sawyer, Madylin and Sullivan are the children of actors Brad and Amy Sweeten. The little girl on Full House, Michelle Tanner, was played by the Olsen twins, Mary-Kate and Ashley Olsen.