KNOXVILLE TO BE DAD AGAIN JACKASS star JOHNNY KNOXVILLE is to be a father for the second time. Naomi Nelson, the star's girlfriend of almost a year, is three months pregnant with his child. The Dukes of Hazzard actor, real name Philip John Clapp, has a 13-year-old daughter with his ex-wife, Melanie, who he divorced in 2007 after 12 years of marriage. (KD/US/IG) JOHNNY KNOXVILLE Los Angeles Premiere of 'The Ringer' - Arrivals.