Martin Short's daughter Katherine Hartley Short's cause of death has been revealed. Us Weekly can confirm via online records that Katherine's death has been officially ruled a suicide. A rep for Martin, 75, confirmed Katherine's death at age 42 in a statement on Tuesday, February 24. "It is with profound grief that we confirm the passing of Katherine Hartley Short. The Short family is devastated by this loss and asks for privacy at this time," the statement read. "Katherine was beloved by all and will be remembered for the light and joy she brought into the world.