How many quarterbacks have lost a Super Bowl with two different teams?

Three quarterbacks have lost the Super Bowl with two different teams. They are:

Craig Morton 0-2 in Super Bowl play
Lost Super Bowl V with the Dallas Cowboys vs. Baltimore Colts
Lost Super Bowl XII with the Denver Broncos vs. Dallas Cowboys

Kurt Warner 1-2 in Super Bowl play
Won Super Bowl XXXIV with the St. Louis Rams vs. Tennessee Titans
Lost Super Bowl XXXVI with the St. Louis Rams vs. New England Patriots
Lost Super Bowl XLIII with the Arizona Cardinals vs. Pittsburgh Steelers

Peyton Manning 1-2 in Super Bowl play
Won Super Bowl XLI with the Indianapolis Colts vs. Chicago Bears
Lost Super Bowl XLIV with the Indianapolis Colts vs. New Orleans Saints
Lost Super Bowl XLVIII with the Denver Broncos vs. Seattle Seahawks