Mrs. Snagsby is the wife of Mr. Snagsby, who runs the law stationer’s shop outside the court of Chancery. She is a high-strung and emotionally volatile woman with an overactive imagination. Although her husband is loyal and mild mannered, Mrs. Snagsby suspects that he is unfaithful to her and thinks that Jo, the urchin who sweeps the streets outside the shop and whom Mr. Snagsby often gives money to, is Mr. Snagsby’s illegitimate son. Mrs. Snagsby lets these delusions carry her away to such an extent that she becomes completely paranoid and follows her husband around looking for evidence of his infidelity. She becomes extremely upset at the thought of this and takes her anger out on her unfortunate servant, Guster. She is a religious and a gullible woman and is in the thrall of the lecherous Mr. Chadband, who presents a pious face to the world but is really a smarmy, petty criminal.