To be available as a defense coverture must be pleaded.1 If such defense is not made, a judgment against on a void contract is valid.2 If under the law a married woman is liable except in certain cases, an answer alleging coverture, but not alleging facts within one of such cases is insufficient.3 As to a petition filed against a married woman the weight of authority is that facts must appear both in pleading and evidence to bring the married woman within the provisions of the statute in order to hold her on her contracts, her liability not being presumed.4