Board Thread:Questions and Answers/@comment-202.80.217.27-20160620145143/@comment-1600847-20160627104532

The problem is only Bran knows the truth of Jon's parentage. If he dies before passing on this information then no one will ever know the truth. I can easily see GRRM having that happen: we the readers/audience will know the truth... but no one in Westeros ever will.