Sam meets Gill in the second season when the Night's Watch stops at Craster's Keep during an expedition beyond the Wall. We learn that Craster is a wilding who marries his daughters and sacrifices the sons borne of these illegitimate unions to the White Walkers. Among the women is Gilly (who we later learn is pregnant with a boy). Sam is heartbroken by her mistreatment and vows to rescue her when the ranging party returns.