Name the four Heisman Trophy winners who also have been Super Bowl MVPs?

Bart Star, Green Bay Packers, Superbowl I & II Joe Namath, New York Jets, Superbowl III Len Dawson, Kansas City Cheifs, Superbowl IV Roger Staubach, Dallas Cowboys, Superbowl VI Terry Bradshaw, Pittsburg Steelers, Superbowl XIII & XIV Jim Plunkett, Oakland Raiders, Superbowl XV Joe Montana, San Francisco 49's, Superbowl XVI, XIX & XXIV Phil Simms, New York Giants, Superbowl XXI Doug Williams, Washington Redskins, Superbowl XXII Mark Rypien, Washington Redskins, Superbowl XXVI Troy Aikman, Dallas Cowboys, Superbowl XXVII Steve Young, San Fancisco 49's, Superbowl XXIX John Elway, Dever Broncos, Superbowl XXXIII Kurt Warner, St. Louis Rams, Superbowl XXXIV Tom Brady, New England Patriots, Superbowl XXXVI & XXXVIII Payton Manning, Indianapolis Colts, Superbowl XLI Eli Manning, New York Giants, Superbowl XLII