Crone (the Seven)
The Crone is one of the seven aspects of a single deity. Believers of the Faith of the Seven consider that God is one with seven aspects, as the sept is a single building, with seven walls.  She represents wisdom and is prayed to for guidance. Her statues often show her with a lamp in one hand.
A Clash of Kings
Catelyn Stark prays in a nameless village’s sept. The sept is modest and has no statues of the Seven, only rough charcoal drawings to represent them. She turns to the Crone and prays “Guide me, wise lady,”. “Show me the path I must walk, and do not let me stumble in the dark places that lie ahead.” 
A Feast for Crows
The pious dwarf makes Brienne’s acquaintance at the Seven Swords inn common room. After chatting with her he notices Brienne looks sad and asks her if she is thinking of her missing sister, he pats her hand and tries to reassure her, telling Brienne “The Crone with light your way for her, never fear. The Maiden will keep her safe.”