Madeline "Maddy" Rigsby is the infant daughter of Wayne Rigsby and Grace Van Pelt. She is first mentioned in the sixth season episode My Blue Heaven. When their babysitter tells them that Maddy is running a fever, her parents cut short a social visit with Teresa Lisbon so they can go home to check on her. Wayne Rigsby tells Lisbon that Grace is particularly worried because Maddy is her first baby.