Now, this is probably a stupid question, but in a Memory of Light Birgitte mentions to Mat that the time he got hung was not the time he "died and lived again," but that he does not remember it.
Now, I'm guessing he doesn't remember because it happened because he had the dagger, so is there a time after the second book but before he gets cured (I really don't remember which book that was in) that he died and lived again? (I'm even going out on a limb by not assuming the aelfinn's prophecy referred to the future)