He gave a VERY rousing speech and then was hit from behind by one of his men. The series didn't show what happened after that.
Hmm... So he was not stabbed. I thought he was. Thanks. Also, about that brother and sister that found Bran, we didn't see anything about them in the last season, did we?
"Fire cannot kill a dragon." -Daenerys Targaryen, Game of Thrones