Three - all in the 2000's.
New England Patriots
Two teams have won three Super Bowls in four years: 1) Dallas Cowboys - Super Bowls XXVII, XXVIII, and XXX 2) New England Patriots - Super Bowls XXXVI, XXXVIII, and XXXIX
The New England Patriots.
1) Dallas Cowboys - won Super Bowls XXVII, XXVIII, and XXX. 2) New England Patriots - won Super Bowls XXXVI, XXXVIII, and XXXIX.
The Patriots have won III Super Bowls.
Through Super Bowl XLIII (bold equals Super Bowls won):1) Miami Dolphins - Super Bowls VI, VII, and VIII2) Minnesota Vikings - Super Bowls VIII, IX, and XI3) Dallas Cowboys - Super Bowls X, XII, and XIII4) Denver Broncos - Super Bowls XXI, XXII, and XXIV5) Buffalo Bills - Super Bowls XXV, XXVI, XXVII, and XXVIII6) Dallas Cowboys - Super Bowls XXVII, XXVIII, and XXX7) New England Patriots - Super Bowls XXXVI, XXXVIII, and XXXIX
Through Super Bowl XLVII, that is Tom Brady (born August 3, 1977) of the New England Patriots who was 26 years, 182 days old when he won his second Super Bowl with the Patriots (Super Bowl XXXVIII which was played February 1, 2004).
Bill Belichick directed the Patriots to victories in Super Bowls XXXVI (2001), XXXVIII (2003) and XXXIX (2004).
The Patriots have had playoff appearances in the following years:2001 - won Super Bowl XXXVI2003 - won Super Bowl XXXVIII2004 - won Super Bowl XXXIX2005 - lost Division Championship Game2006 - lost AFC Championship Game2007 - lost Super Bowl XLII
He has helped the Patriots win 3 Super Bowls in 4 years.
To be a dynasty you have to dominate the sport for multiple seasons. The Patriots became a Dynasty after winning 3 Super Bowls in four years. The Bills could be considered a Dynasty for going to 4 straight Super Bowls
The New England Patriots have lost four of their record nine Super Bowl appearances. They have won five times. The Patriots' four losses occurred in the following contests:Super Bowl XX (1-26-86) -- Chicago 46, New England 10.Super Bowl XXXI (1-26-97) -- Green Bay 35, New England 21.Super Bowl XLII (2-3-08) -- New York Giants 17, New England 14.Super Bowl XLVI (2-5-12) -- New York Giants 21, New England 17.