They’d all done a deal of vowing back in that cell, Jaime most of all. That was Lady Catelyn’s price for loosing him. She had laid the point of the big wench’s sword against his heart and said, “Swear that you will never again take up arms against Stark nor Tully. Swear that you will compel your brother to honor his pledge to return my daughters safe and unharmed. Swear on your honor as a knight, on your honor as a Lannister, on your honor as a Sworn Brother of the Kingsguard. Swear it by your sister’s life, and your father’s, and your son’s, by the old gods and the new, and I’ll send you back
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