Shirley Cuban, the mother of Dallas Mavericks owner Mark Cuban, has died, her son Brian Cuban said. She was 84. Cuban died Friday in the suburban Pittsburgh home where she and her husband, Norton, raised sons Mark, Brian and Jeff, The Dallas Morning News reported. Brian Cuban said his mother died after a long battle with lung cancer. “My mom set her own path and didn’t follow convention,” Brian Cuban said. “Especially at a time when women were expected to follow convention.”