According to Isaac Hempstead-Wright, Bran is already aware that his mother and older brother are dead. The actor who portrays the disabled Stark child says Bran realized his family was ill-fated when he had a vision of Robb and Catelyn in Season 3.
Martin ”said what he wanted to do was to take the traditional format of Beauty and the Beast and change the roles — and also the genders,” she says. “That really excited me.”