joyoussailor asked: Rowling told Alan Rickman the outcome/true loyalties of Severus Snape when he was first cast in the role. Do you think Martin informed certain actors about important plot points in order to improve their portrayal of a character? E.g. Telling Sean Bean the truth of Jon’s parentage/Lyanna’s death.
We actually know he has — Alfie Allen knows who Jon’s parents are and has said as much in an interview. He was even slightly spoilery about it, god help us. So I have to assume others know as well.