A Feast for Crows
Introduced in 1998's "A Clash of Kings", she is a wildling from the wild lands north of the Wall who is befriended by Samwell Tarly and Jon Snow. She subsequently appeared in Martin's "A Storm of Swords" (2000), "A Feast for Crows" (2005), "A Dance with Dragons" (2011), and will appear in the upcoming novel "The Winds of Winter".