Hard upon the heels of his victory in the Whispering Wood, Robb Stark turned his host against the Lannister camps that still ringed Riverrun. With Ser Jaime a captive and his cavalry destroyed, the three fortified camps about the castle stood leaderless and unwary, their commanders never dreaming that the boy who had beaten them in the wood could be upon them so soon. Robb fell on them at night, striking the westermen from without while the trumpets of Riverrun sounded and the Tully men, Ser Edmure freed and the garrison sallying forth, struck them from within.
Caught between the hammer of the Stark and Tully horse and the anvil of the castle, the Lannister camps came apart. The three camps could not come to one another's aid across the rivers, and each was broken in turn; hundreds were slain or drowned, and the survivors fled or yielded. The siege of Riverrun was lifted, and Robb Stark rode into the castle of his mother's fathers a conqueror, to kneel at last before the dying Lord Hoster Tully. The victory joined the strength of the north and the riverlands into a single host and made Robb the master of the war in the west; and it was in the wake of these triumphs, at Riverrun, that the lords of the Trident and the north hailed the young wolf King in the North and King of the Trident.