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  === ''A Storm of Swords'' ===
  During one of his assaults in the Westerlands, Robb is wounded, at the same time learns the news of his brothers' apparent murder.  Falling ill due to mourning and injury, he falls in love with the noble maiden in charge of nursing him, Jeyne Westerling, and takes her virginity.  To preserve Jeyne's honor, Robb marries her, rescinding his previous marriage arrangement with House Frey, causing the Freys to desert his army.  Meanwhile, Stannis Baratheon, who has suffered a major defeat at the Battle of Blackwater, is urged by Melisandre to use blood magic with leeches to curse the three rival kings Joffrey Baratheon, Robb Stark, and Balon Greyjoy.
  After Stannis' defeat at the Blackwater, Robb withdraws from the Westerlands and returns to Riverrun to attend the funeral of his grandfather Lord Hoster Tully.  Upon returning, Robb learns that his mother Lady Catelyn has secretly released the prisoner Jaime Lannister in the hope of exchanging her hostage daughter Sansa in King's Landing.  This leads to the mutiny of Lord Rickard Karstark, whose two sons were slain by Jaime during the Battle of Whispering Woods, forcing Robb to execute Lord Rickard and lose the Karstark support.  As the war situation is looking bad, Robb tries to repair the alliance with the Freys, by bargaining his uncle Edmure Tully to marry Roslin Frey, hence rebuilding the marriage alliance.  The Freys then demand that Robb personally attend the wedding at the Twins as a gesture of apology.
  On their way to the Twins, Robb learns that Balon Greyjoy has accidentally died, and the ironborn commanders are returning to the Iron Islands to attend Kingsmoot.  He decides to lead his army to retake the North immediately after the wedding is complete.
  He soon learns that his sister Sansa has been forcibly married to Tyrion Lannister. To prevent the Lannisters from claiming Winterfell through Sansa's child by Tyrion, Robb, against the opposition of his mother Catelyn, disinherits Sansa and signs a decree legitimizing his half-brother Jon Snow as his heir if Robb happens to die with no children, and he requests the Night's Watch release Jon from service.  Robb then entrusts the decree to Lord Galbart Glover and Lady Maege Mormont, sending them to secretly sail up the Neck seeking contact with Howland Reed, Lord of Greywater Watch, so he can launch a coordinated attack to recapture the strategically crucial Moat Cailin.  However at the Twins, the Northern convoy, who are unarmed in attendance to the wedding, are betrayed and massacred by the Freys during the wedding feast, in an event known as the "Red Wedding".  Robb is personally murdered by his chief vassal, Lord Roose Bolton, who has also secretly defected to the Lannisters and been rewarded with the title Warden of the North.