Hmm, on reflection, hmm. Jon has a general interest in this family, but if he winds up winning the RNG, I might have to clarify what he knows about The Child back in Serthica. (More than I do, which is the problem!) But he's not all that easily manipulated if you're not Sansa or Tyrion, and there are some parallels here with Selyse/Stannis/Melisandre.