[He sees her consider the pipe and elect not to bring it, and that alleviates some of his own tension, though he's still on his guard. As they move towards the library, his strides are long and relatively quick, an attempt to cut through the pervasive presence of the crows.]

There are heroes, my lady, or people who try to be. But many of them may not be knights, and many of them will die forgotten. I met more than one at the Wall, and beyond it.

[He listens, then, to the rest of her answer. Riverrun was once under seige by Jaime Lannister, all right, but not at any time soon after Robb's death; it had been years later, not long before Jon himself had fought Bolton for Winterfell, and Lannister had taken the place. A deep frown settles in as he hears this, and though they're already not far from the library, the next thing she says stops him completely in his tracks, and the face he turns to her is surprised, perturbed. He feels his heart rushing in his chest.]

His heir? Robb left no heir.