Marquette County prosecutors say 42-year-old Frances Rittman started the house fire which killed her former boyfriend last April.  Rittman’s attorneys entered a not guilty plea on her behalf during a Tuesday court appearance.  Forty-three-year-old Daniel Gilmartin had called a friend saying Rittman had tried to light his couch on fire in his garage.  Firefighters were called to the Montello address later the same day to find the house engulfed in flames.  Gilmartin’s body was inside.