Johnny Knoxville & Melanie Lynn Line up, ladies. Johnny Knoxville is officially single. The "Jackass" daredevil, born Philip John Clapp, is legally single after being married for nearly 13 years. The prankster filed for divorce from Melanie Lynn in July 2007, citing irreconcilable differences. The couple had been married since May 1995 and separated in July 2006. Read the Full Story ... Related Story: Johnny Knoxville Recovering From Crotch Injury Johnny Knoxville photo courtesy of Zap2it.