It is a very popular one, historically.
Jon Brion's birth name is Jon Wright Brion.
Jon Reuning's birth name is Jonathan Reuning.
Jon Pollak's birth name is Jon Pollak.
Jon Vomit's birth name is Worthley, Jon.
Jon Maiullo's birth name is Jon Dickerson.
Jon Jon Snipes's birth name is John Ralph Snipes Jr..
Jon Appleton's birth name is Jon Howard Appleton.
Jon Runyan's birth name is Jon Daniel Runyan.
Jon Penington's birth name is Kenneth Jon Penington.
Jon Niccum's birth name is Jon Scott Niccum.
Jon Trapnell's birth name is Jon Charles Trapnell.
Jon Vickers's birth name is Jon S. Vickers.