The families of three Chardon High School students shot and killed in February of last year students are suing the teenage gunman and his family.The wrongful-death lawsuit alleges negligent supervision by T.J. Lane's parents and grandparents. The suit seeks damages for the relatives of 16-year-olds Daniel Parmertor and Demetrius Hewlin and 17-year-old Russell King Jr. Lane pleaded guilty to aggravated murder and other charges on Tuesday and will be sentenced on March 19th.