Fan Casting Martha Wayne in The Dark Knight

Martha Wayne (née Kane) was born into the Kane family, who were so rich that they allegedly "owned the half of Gotham that the Waynes don't". Her father, Roderick "Roddy" Kane, had a fortune through his ownership of Kane Chemicals. Martha married Thomas Wayne, though this started an argument with her parents which would last the rest of her life. However, she remained on good terms with her friend Marsha Lamarr.