Jon is simply a different spelling for John. The Spanish name for John is Juan (pronounced Huan).
Jon Vomit's birth name is Worthley, Jon.
Jon Pollak's birth name is Jon Pollak.
Jon Cavaiani's birth name is Jon Robert Cavaiani.
Anand Jon's birth name is Anand Jon Alexander.
Casey Jon Deidrick's birth name is Casey Jon Deidrick.
Jon Brion's birth name is Jon Wright Brion.
Jon Reuning's birth name is Jonathan Reuning.
Jon Vomit's birth name is Worthley, Jon.
Jon Maiullo's birth name is Jon Dickerson.
Jon Pollak's birth name is Jon Pollak.
Jon Jon Snipes's birth name is John Ralph Snipes Jr..
Jon Cavaiani's birth name is Jon Robert Cavaiani.
Jon Kyl's birth name is Jon Llewellyn Kyl.
Jon Lackey's birth name is Jon Alan Lackey.
Jon Lange's birth name is Jon Gudmand Lange.
Jon Runyan's birth name is Jon Daniel Runyan.
Jon Appleton's birth name is Jon Howard Appleton.