Martha "The Cackling Lady"
Martha " The Cackling Lady" or the Hag of Greyend Alley as the people of the area call her is an old woman that has taken refuge in the dead end Greyend Alley. She has built a rickety structure to live in and it has been improved by the party recently.
She is a source for information for the group. She has knowledge about the sewer system and maybe the Waterdeep underworld in general. She also either makes or ,because of the particular filth of her alley, possesses a moldy bread that causes hallucinations. The are known to some as " Martha-cakes".