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  ====The Twins====
  The Twins is the seat of House Frey, which has grown wealthy by charging a toll of all those who cross for the past six centuries. Because the Freys are both wealthy and numerous, theirs is one of the most powerful houses sworn to House Tully. The castle's strategic position gives House Frey enormous importance in times of war.
  When Robb Stark goes to The Twins to repair his alliance with House Frey, the Freys massacre him, his mother, and his army (and in the TV adaptation, his wife): an event known as "The Red Wedding", which violates native customs of guest right and incurs enmity throughout the Seven Kingdoms, especially in the Riverlands and North.